DL 2925 then AA 5503 at Atlanta
Mobile → Atlanta → Washington National
Timetable, Atlanta time
20:35DL 2925 from Mobile at the gate
16:55AA 5503 to Washington National leaves the gate
20 h 20 apart on the timetable, overnight
AA 5503 leaves 20 h 20 after DL 2925 arrives on the timetable: more than half a day, so not a connection we count.