Originally Posted by AndyPatterson

Actually, my original posting had to do with AS 2, the late evening arrival to DCA, where AS 2 is the ONLY flight arriving that late at that individual terminal. Yet, when it arrives early as it often does, the GA is nowhere to be found, and we have to sit and wait and wait for the GA to show up, 15-20 or more minutes after we reach the jetway.

So, it is not a matter of full terminals, or GAs handling other flights. Instead, the terminal is empty and the GA is presumably sitting in a break room. What I suggested was that when a flight is early, that the GA receive a text message or other notification, so that he/she will be at the gate when the plane arrives. That's a much simpler issue than the problem with full terminals (which I agree is more intractable).