AA 5510 then DL 2642 at Atlanta
Washington National → Atlanta → Philadelphia
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
22:54DL 2642 to Philadelphia leaves the gate
23 h 31 apart on the timetable, overnight
DL 2642 leaves 23 h 31 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.