diff --git a/plugins/platforms/telegram/adapter.py b/plugins/platforms/telegram/adapter.py
index b23bdcf8d33..3fa37f94aed 100644
--- a/plugins/platforms/telegram/adapter.py
+++ b/plugins/platforms/telegram/adapter.py
@@ -3025,8 +3025,11 @@ class TelegramAdapter(BasePlatformAdapter):
             def _with_limits(httpx_kwargs: Optional[dict] = None) -> dict:
                 """Merge tuned keepalive limits into httpx client kwargs.
 
-                A caller-supplied ``limits`` (none today) is left untouched;
-                otherwise the CLOSE_WAIT-safe limits are injected.
+                Used by the proxy and direct-DNS branches, where httpx honours
+                the client-level ``limits`` kwarg. A caller-supplied ``limits``
+                is left untouched; otherwise the CLOSE_WAIT-safe limits are
+                injected. The fallback-IP branch does NOT use this helper — see
+                the ``_transport_kwargs`` note below for why.
                 """
                 kwargs = dict(httpx_kwargs or {})
                 if _pool_limits is not None and "limits" not in kwargs:
@@ -3055,9 +3058,12 @@ class TelegramAdapter(BasePlatformAdapter):
                 # Keep request/update pools separate to reduce contention during
                 # polling reconnect + bot API bootstrap/delete_webhook calls.
                 # httpx ignores the client-level `limits` kwarg when a custom
-                # `transport` is supplied (#58790).  Pass the tuned limits
+                # `transport` is supplied (#58790).  Unlike the proxy/direct
+                # branches (which inject limits at the client level via
+                # `_with_limits`), this branch MUST pass the tuned limits
                 # directly into TelegramFallbackTransport so its inner
-                # AsyncHTTPTransport instances honour keepalive_expiry.
+                # AsyncHTTPTransport instances honour keepalive_expiry — do not
+                # route this through `_with_limits`, httpx would discard it.
                 _transport_kwargs: dict = {}
                 if _pool_limits is not None:
                     _transport_kwargs["limits"] = _pool_limits