DL 410 then DL 589 at Atlanta
Washington National → Atlanta → Mexico City
Timetable, Atlanta time
07:54DL 410 from Washington National at the gate
19:57DL 589 to Mexico City leaves the gate
12 h 03 apart on the timetable
DL 589 leaves 12 h 03 after DL 410 arrives on the timetable: more than half a day, so not a connection we count.