AA 5471 then DL 1374 at Atlanta
Washington National → Atlanta → Louisville
Timetable, Atlanta time
08:30AA 5471 from Washington National at the gate
07:45DL 1374 to Louisville leaves the gate
23 h 15 apart on the timetable, overnight
DL 1374 leaves 23 h 15 after AA 5471 arrives on the timetable: more than half a day, so not a connection we count.