diff --git a/digital-avatar-app/backend/routers/takeover.py b/digital-avatar-app/backend/routers/takeover.py
index 5f0728e..d8f0b1d 100644
--- a/digital-avatar-app/backend/routers/takeover.py
+++ b/digital-avatar-app/backend/routers/takeover.py
@@ -12,6 +12,7 @@ from routers.authorizations import _require_authorization
 from routers.avatars import _require_owned_avatar
 
 router = APIRouter(tags=["分身接管"])
+BOXIM_STATUS_FRESH_SECONDS = 60
 
 
 @router.get("/avatar/{avatar_id}/takeover/status")
@@ -44,7 +45,9 @@ def get_takeover_status(
         cursor
         and cursor.initialized
         and cursor.last_polled_at
-        and cursor.last_polled_at >= datetime.utcnow() - timedelta(seconds=15)
+        # BOXIM offline-message reads can long-poll for about 20 seconds.
+        and cursor.last_polled_at
+        >= datetime.utcnow() - timedelta(seconds=BOXIM_STATUS_FRESH_SECONDS)
     ):
         status, message = "ready", "BOXIM 已连接，收到私聊消息 3 秒后自动回复"
     else:
diff --git a/digital-avatar-app/backend/tests/test_takeover_api.py b/digital-avatar-app/backend/tests/test_takeover_api.py
index 9d93033..2215e41 100644
--- a/digital-avatar-app/backend/tests/test_takeover_api.py
+++ b/digital-avatar-app/backend/tests/test_takeover_api.py
@@ -1,6 +1,6 @@
 """Tests for takeover configuration and BOXIM connection status."""
 
-from datetime import datetime
+from datetime import datetime, timedelta
 
 from fastapi.testclient import TestClient
 
@@ -192,6 +192,28 @@ def test_takeover_status_reports_ready_pending_count_and_errors(authorization_co
     assert ready["pendingCount"] == 1
     assert ready["lastPolledAt"]
 
+    db = SessionLocal()
+    try:
+        cursor = db.query(TakeoverCursor).filter(TakeoverCursor.avatar_id == avatar_id).one()
+        cursor.last_polled_at = datetime.utcnow() - timedelta(seconds=30)
+        db.commit()
+    finally:
+        db.close()
+
+    long_polling = client.get(endpoint, headers=context["owner_headers"]).json()["data"]
+    assert long_polling["status"] == "ready"
+
+    db = SessionLocal()
+    try:
+        cursor = db.query(TakeoverCursor).filter(TakeoverCursor.avatar_id == avatar_id).one()
+        cursor.last_polled_at = datetime.utcnow() - timedelta(seconds=61)
+        db.commit()
+    finally:
+        db.close()
+
+    stale = client.get(endpoint, headers=context["owner_headers"]).json()["data"]
+    assert stale["status"] == "connecting"
+
     db = SessionLocal()
     try:
         cursor = db.query(TakeoverCursor).filter(TakeoverCursor.avatar_id == avatar_id).one()