Originally Posted by
Often1
1. Always check with the arrival GA. Your connecting flight may take a last second delay and there may still be a seat available. It may be better to sprint than to argue. Do understand that the major carriers no longer call the other gate. There is no need. The departure gate agent can see that you have arrived and operations will make a decision about holding the onward flight (very, very unlikely) and isn't going to base that on hysterical phone calls. When seconds count, wasting them on "call the gate" stuff is silly.
the GA working the onward flight can see that
your inbound flight has blocked in ... the GA has absolutely no visibility into whether the rampers are offloading the gate-checked bags in a timely manner, whether the jetway driver has had to reposition the bridge four or five times in order to let pax deplane, etc
contacting the departure gate may indeed prove fruitless, but asking the arrival GA to do so (to provide said visibility into when you will actually start running in that direction) certainly can't hurt