AA 4689 then DL 589 at Atlanta
Washington National → Atlanta → Mexico City
Timetable, Atlanta time
19:44AA 4689 from Washington National at the gate
19:08DL 589 to Mexico City leaves the gate
23 h 24 apart on the timetable, overnight
DL 589 leaves 23 h 24 after AA 4689 arrives on the timetable: more than half a day, so not a connection we count.