AA 5510 then DL 1320 at Atlanta
Washington National → Atlanta → Cleveland
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
23:09DL 1320 to Cleveland leaves the gate
23 h 46 apart on the timetable, overnight
DL 1320 leaves 23 h 46 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.