To me there is no denying that the rebanking of flights is causing flights to become late. Time after time it seems as though when I fly into a hub we sit on the tarmac waiting for a gate with no optional gate to go to because all gates occupied with an a/c waiting for that gate. Last week we sat for 75 minutes waiting for our gate at ORD. I had 1.45 minutes so I made by connection at the last minute. Most of the paxs had missed their connections, last flights of the night.
The week before we sat on the ground at MIA for over an hour. Some paxs missed their flights to SA and CA (many of them the last flight or only flight of the night).