AA 5510 then WN 493 at Atlanta
Washington National → Atlanta → Phoenix
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
20:40WN 493 to Phoenix leaves the gate
21 h 17 apart on the timetable, overnight
WN 493 leaves 21 h 17 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.