AA 5503 then DL 2862 at Atlanta
Washington National → Atlanta → Oklahoma City
Timetable, Atlanta time
16:16AA 5503 from Washington National at the gate
15:20DL 2862 to Oklahoma City leaves the gate
23 h 04 apart on the timetable, overnight
DL 2862 leaves 23 h 04 after AA 5503 arrives on the timetable: more than half a day, so not a connection we count.