AA 5510 then DL 1232 at Atlanta
Washington National → Atlanta → Detroit
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
20:20DL 1232 to Detroit leaves the gate
20 h 57 apart on the timetable, overnight
DL 1232 leaves 20 h 57 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.