diff --git a/extensions/msteams/src/graph.test.ts b/extensions/msteams/src/graph.test.ts
index 91e59dc71127..574ce5666bf5 100644
--- a/extensions/msteams/src/graph.test.ts
+++ b/extensions/msteams/src/graph.test.ts
@@ -105,6 +105,16 @@ function fetchCallUrl(index: number) {
   return requestUrl(input);
 }
 
+function fetchCallInit(index: number) {
+  return vi.mocked(globalThis.fetch).mock.calls[index]?.[1];
+}
+
+function fetchCallHeader(index: number, name: string) {
+  const headers = fetchCallInit(index)?.headers;
+  expect(headers).toBeDefined();
+  return (headers as Record<string, string> | undefined)?.[name];
+}
+
 function expectFetchPathContains(index: number, expectedPath: string) {
   expect(fetchCallUrl(index)).toContain(expectedPath);
 }
@@ -168,15 +178,9 @@ describe("msteams graph helpers", () => {
       }),
     ).resolves.toEqual(graphCollection(groupOne));
 
-    expect(globalThis.fetch).toHaveBeenCalledWith(
-      "https://graph.microsoft.com/v1.0/groups?$select=id",
-      {
-        headers: expect.objectContaining({
-          Authorization: `Bearer ${graphToken}`,
-          ConsistencyLevel: "eventual",
-        }),
-      },
-    );
+    expect(fetchCallUrl(0)).toBe("https://graph.microsoft.com/v1.0/groups?$select=id");
+    expect(fetchCallHeader(0, "Authorization")).toBe(`Bearer ${graphToken}`);
+    expect(fetchCallHeader(0, "ConsistencyLevel")).toBe("eventual");
 
     mockTextFetchResponse("forbidden", { status: 403 });
 
@@ -213,26 +217,16 @@ describe("msteams graph helpers", () => {
       }),
     ).resolves.toBeUndefined();
 
-    expect(globalThis.fetch).toHaveBeenNthCalledWith(
-      1,
-      "https://graph.microsoft.com/v1.0/chats/chat-1/pinnedMessages",
-      expect.objectContaining({
-        method: "POST",
-        body: JSON.stringify({ messageId: "msg-1" }),
-        headers: expect.objectContaining({
-          Authorization: `Bearer ${graphToken}`,
-          "Content-Type": "application/json",
-        }),
-      }),
-    );
-    expect(globalThis.fetch).toHaveBeenNthCalledWith(
-      2,
+    expect(fetchCallUrl(0)).toBe("https://graph.microsoft.com/v1.0/chats/chat-1/pinnedMessages");
+    expect(fetchCallInit(0)?.method).toBe("POST");
+    expect(fetchCallInit(0)?.body).toBe(JSON.stringify({ messageId: "msg-1" }));
+    expect(fetchCallHeader(0, "Authorization")).toBe(`Bearer ${graphToken}`);
+    expect(fetchCallHeader(0, "Content-Type")).toBe("application/json");
+    expect(fetchCallUrl(1)).toBe(
       "https://graph.microsoft.com/beta/chats/chat-1/messages/msg-1/setReaction",
-      expect.objectContaining({
-        method: "POST",
-        body: JSON.stringify({ reactionType: "like" }),
-      }),
     );
+    expect(fetchCallInit(1)?.method).toBe("POST");
+    expect(fetchCallInit(1)?.body).toBe(JSON.stringify({ reactionType: "like" }));
   });
 
   it("surfaces POST and DELETE graph failures with method-specific labels", async () => {
@@ -335,16 +329,11 @@ describe("msteams graph helpers", () => {
     });
     await expectSearchGraphUsers("carol", [], { token: "token-4" });
 
-    const calls = vi.mocked(globalThis.fetch).mock.calls;
     expectFetchPathContains(
       0,
       "/users?$search=%22displayName%3Abob%22&$select=id,displayName,mail,userPrincipalName&$top=25",
     );
-    expect(calls[0]?.[1]).toEqual(
-      expect.objectContaining({
-        headers: expect.objectContaining({ ConsistencyLevel: "eventual" }),
-      }),
-    );
+    expect(fetchCallHeader(0, "ConsistencyLevel")).toBe("eventual");
     expectFetchPathContains(
       1,
       "/users?$search=%22displayName%3Acarol%22&$select=id,displayName,mail,userPrincipalName&$top=10",