diff --git a/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.test.ts b/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.test.ts
index cf33bc207ff..869e252b3b3 100644
--- a/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.test.ts
+++ b/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.test.ts
@@ -336,6 +336,17 @@ describe("telegram live qa runtime", () => {
     ).toBe(true);
   });
 
+  it("keeps bot-to-bot plain mentions out of the default Telegram live set", () => {
+    expect(__testing.findScenario().map((scenario) => scenario.id)).toEqual([
+      "telegram-help-command",
+      "telegram-commands-command",
+      "telegram-tools-compact-command",
+      "telegram-whoami-command",
+      "telegram-context-command",
+      "telegram-mention-gating",
+    ]);
+  });
+
   it("tracks Telegram live coverage against the shared transport contract", () => {
     expect(__testing.TELEGRAM_QA_STANDARD_SCENARIO_IDS).toEqual([
       "canary",
diff --git a/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.ts b/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.ts
index 18a3fcc1e70..a0bfd1f0c0a 100644
--- a/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.ts
+++ b/extensions/qa-lab/src/live-transports/telegram/telegram-live.runtime.ts
@@ -61,6 +61,7 @@ type TelegramQaScenarioRun = {
 
 type TelegramQaScenarioDefinition = LiveTransportScenarioDefinition<TelegramQaScenarioId> & {
   buildRun: (sutUsername: string) => TelegramQaScenarioRun;
+  defaultEnabled?: boolean;
 };
 
 type TelegramObservedMessage = {
@@ -272,6 +273,7 @@ const TELEGRAM_QA_SCENARIOS: TelegramQaScenarioDefinition[] = [
   {
     id: "telegram-mentioned-message-reply",
     title: "Telegram mentioned message gets a reply",
+    defaultEnabled: false,
     timeoutMs: 45_000,
     buildRun: (sutUsername) => ({
       allowAnySutReply: true,
@@ -835,10 +837,14 @@ function buildObservedMessagesArtifact(params: {
 }
 
 function findScenario(ids?: string[]) {
+  const scenarios =
+    ids && ids.length > 0
+      ? TELEGRAM_QA_SCENARIOS
+      : TELEGRAM_QA_SCENARIOS.filter((scenario) => scenario.defaultEnabled !== false);
   return selectLiveTransportScenarios({
     ids,
     laneLabel: "Telegram",
-    scenarios: TELEGRAM_QA_SCENARIOS,
+    scenarios,
   });
 }