diff --git a/extensions/qa-lab/src/live-transports/matrix/matrix-scenario-flows.test.ts b/extensions/qa-lab/src/live-transports/matrix/matrix-scenario-flows.test.ts
index e3fb1db911cc..af44568fedcb 100644
--- a/extensions/qa-lab/src/live-transports/matrix/matrix-scenario-flows.test.ts
+++ b/extensions/qa-lab/src/live-transports/matrix/matrix-scenario-flows.test.ts
@@ -24,20 +24,6 @@ const MATRIX_ISOLATED_ALLOWBOTS_ADMISSION_SCENARIOS = [
   "matrix-allowbots-true-unmentioned-open-room",
 ] as const;
 
-const MATRIX_NO_REPLY_SCENARIOS = [
-  "matrix-allowbots-default-block",
-  "matrix-allowbots-mentions-unmentioned-open-room-block",
-  "matrix-allowbots-room-override-blocks-account-true",
-  "matrix-allowbots-self-sender-ignored",
-  "matrix-attachment-only-ignored",
-  "matrix-inbound-edit-ignored",
-  "matrix-mention-metadata-spoof-block",
-  "matrix-mxid-prefixed-command-block",
-  "matrix-reaction-not-a-reply",
-] as const;
-
-const MATRIX_NO_REPLY_WINDOW_MS = 8_000;
-
 const MATRIX_PROVIDER_DEADLINE_SCENARIOS = new Set([
   "matrix-e2ee-thread-follow-up",
   "matrix-inbound-edit-no-duplicate-trigger",
@@ -140,13 +126,6 @@ describe("Matrix QA Lab scenario flows", () => {
     }
   });
 
-  it("reserves flow cleanup time after the no-reply observation window", () => {
-    for (const scenarioId of MATRIX_NO_REPLY_SCENARIOS) {
-      const execution = requireFlowScenario(readQaScenarioById(scenarioId)).execution;
-      expect(execution.timeoutMs, scenarioId).toBeGreaterThan(MATRIX_NO_REPLY_WINDOW_MS);
-    }
-  });
-
   it("uses provider-owned deadlines for model-driven multi-phase Matrix flows", () => {
     for (const scenarioId of MATRIX_PROVIDER_DEADLINE_SCENARIOS) {
       const execution = requireFlowScenario(readQaScenarioById(scenarioId)).execution;
diff --git a/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.test.ts b/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.test.ts
index 58a87389c17a..3d88c38b6d98 100644
--- a/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.test.ts
+++ b/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.test.ts
@@ -17,8 +17,7 @@ describe("matrix scenario runtime shared", () => {
 
     vi.stubEnv("OPENCLAW_QA_MATRIX_NO_REPLY_WINDOW_MS", "12000");
     expect(resolveMatrixQaNoReplyWindowMs(30_000)).toBe(12_000);
-    expect(resolveMatrixQaNoReplyWindowMs(15_000)).toBe(10_000);
-    expect(resolveMatrixQaNoReplyWindowMs(5_000)).toBe(1);
+    expect(resolveMatrixQaNoReplyWindowMs(5_000)).toBe(5_000);
 
     for (const value of ["1e3", "0x1000", "1.5", "nope"]) {
       vi.stubEnv("OPENCLAW_QA_MATRIX_NO_REPLY_WINDOW_MS", value);
diff --git a/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.ts b/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.ts
index accccf6c8699..f1916af5ac4d 100644
--- a/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.ts
+++ b/extensions/qa-lab/src/live-transports/matrix/scenarios/scenario-runtime-shared.ts
@@ -81,8 +81,6 @@ export type MatrixQaScenarioContext = {
 
 const NO_REPLY_WINDOW_MS = 8_000;
 const NO_REPLY_WINDOW_ENV = "OPENCLAW_QA_MATRIX_NO_REPLY_WINDOW_MS";
-// The outer deadline starts before Matrix preparation and must also cover cleanup.
-const NO_REPLY_DEADLINE_RESERVE_MS = 5_000;
 const MATRIX_QA_PREVIEW_LIMIT = 200;
 
 export function truncateMatrixQaPreview(value: string | null | undefined) {
@@ -96,8 +94,7 @@ export function resolveMatrixQaNoReplyWindowMs(timeoutMs: number) {
   const parsed =
     raw === undefined ? NO_REPLY_WINDOW_MS : /^\d+$/.test(raw) ? Number(raw) : Number.NaN;
   const windowMs = Number.isSafeInteger(parsed) && parsed >= 1 ? parsed : NO_REPLY_WINDOW_MS;
-  const availableWindowMs = Math.max(1, timeoutMs - NO_REPLY_DEADLINE_RESERVE_MS);
-  return Math.min(windowMs, availableWindowMs);
+  return Math.min(windowMs, timeoutMs);
 }
 
 export {
diff --git a/qa/scenarios/channels/matrix-allowbots-default-block.yaml b/qa/scenarios/channels/matrix-allowbots-default-block.yaml
index c5ece7156aba..d042c2705952 100644
--- a/qa/scenarios/channels/matrix-allowbots-default-block.yaml
+++ b/qa/scenarios/channels/matrix-allowbots-default-block.yaml
@@ -8,7 +8,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixConfigOverrides:
diff --git a/qa/scenarios/channels/matrix-allowbots-mentions-unmentioned-open-room-block.yaml b/qa/scenarios/channels/matrix-allowbots-mentions-unmentioned-open-room-block.yaml
index d95d70284190..9392f56561bd 100644
--- a/qa/scenarios/channels/matrix-allowbots-mentions-unmentioned-open-room-block.yaml
+++ b/qa/scenarios/channels/matrix-allowbots-mentions-unmentioned-open-room-block.yaml
@@ -8,7 +8,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixConfigOverrides:
diff --git a/qa/scenarios/channels/matrix-allowbots-room-override-blocks-account-true.yaml b/qa/scenarios/channels/matrix-allowbots-room-override-blocks-account-true.yaml
index 1890b2e0fc5f..028697b5c1ca 100644
--- a/qa/scenarios/channels/matrix-allowbots-room-override-blocks-account-true.yaml
+++ b/qa/scenarios/channels/matrix-allowbots-room-override-blocks-account-true.yaml
@@ -8,7 +8,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixConfigOverrides:
diff --git a/qa/scenarios/channels/matrix-allowbots-self-sender-ignored.yaml b/qa/scenarios/channels/matrix-allowbots-self-sender-ignored.yaml
index 6cd692f50f0b..e91343a91c20 100644
--- a/qa/scenarios/channels/matrix-allowbots-self-sender-ignored.yaml
+++ b/qa/scenarios/channels/matrix-allowbots-self-sender-ignored.yaml
@@ -8,7 +8,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixConfigOverrides:
diff --git a/qa/scenarios/channels/matrix-attachment-only-ignored.yaml b/qa/scenarios/channels/matrix-attachment-only-ignored.yaml
index 97aa6bc722e9..203f8391d6b8 100644
--- a/qa/scenarios/channels/matrix-attachment-only-ignored.yaml
+++ b/qa/scenarios/channels/matrix-attachment-only-ignored.yaml
@@ -10,7 +10,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixTopology:
diff --git a/qa/scenarios/channels/matrix-inbound-edit-ignored.yaml b/qa/scenarios/channels/matrix-inbound-edit-ignored.yaml
index 2118502e8202..38ab0db6eed3 100644
--- a/qa/scenarios/channels/matrix-inbound-edit-ignored.yaml
+++ b/qa/scenarios/channels/matrix-inbound-edit-ignored.yaml
@@ -8,7 +8,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
 
 flow:
diff --git a/qa/scenarios/channels/matrix-mention-metadata-spoof-block.yaml b/qa/scenarios/channels/matrix-mention-metadata-spoof-block.yaml
index 473c675daf2e..322a7dd4b91b 100644
--- a/qa/scenarios/channels/matrix-mention-metadata-spoof-block.yaml
+++ b/qa/scenarios/channels/matrix-mention-metadata-spoof-block.yaml
@@ -8,7 +8,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
 
 flow:
diff --git a/qa/scenarios/channels/matrix-mxid-prefixed-command-block.yaml b/qa/scenarios/channels/matrix-mxid-prefixed-command-block.yaml
index 9cf62517288d..e6c734a39e18 100644
--- a/qa/scenarios/channels/matrix-mxid-prefixed-command-block.yaml
+++ b/qa/scenarios/channels/matrix-mxid-prefixed-command-block.yaml
@@ -10,7 +10,7 @@ scenario:
   execution:
     kind: flow
     channel: matrix
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixConfigOverrides:
diff --git a/qa/scenarios/channels/matrix-reaction-not-a-reply.yaml b/qa/scenarios/channels/matrix-reaction-not-a-reply.yaml
index b0ca67f09223..f7ae5802dcef 100644
--- a/qa/scenarios/channels/matrix-reaction-not-a-reply.yaml
+++ b/qa/scenarios/channels/matrix-reaction-not-a-reply.yaml
@@ -10,7 +10,7 @@ scenario:
     channel: matrix
     suiteIsolation: isolated
     isolationReason: Posts native reaction state against a fresh canary reply and cannot inherit a shared Matrix session.
-    timeoutMs: 15000
+    timeoutMs: 8000
     retryCount: 0
     config:
       matrixRequireCanary: true