AA 3962 then DL 1446 at Atlanta
Washington National → Atlanta → Gainesville
Timetable, Atlanta time
13:54AA 3962 from Washington National at the gate
13:47DL 1446 to Gainesville leaves the gate
23 h 53 apart on the timetable, overnight
DL 1446 leaves 23 h 53 after AA 3962 arrives on the timetable: more than half a day, so not a connection we count.