AA 5510 then DL 1713 at Atlanta
Washington National → Atlanta → El Paso
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
20:13DL 1713 to El Paso leaves the gate
20 h 50 apart on the timetable, overnight
DL 1713 leaves 20 h 50 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.