DL 8851 then DL 585 at Atlanta
Ottawa → Atlanta → Mexico City
Timetable, Atlanta time
19:05DL 8851 from Ottawa at the gate
17:45DL 585 to Mexico City leaves the gate
22 h 40 apart on the timetable, overnight
DL 585 leaves 22 h 40 after DL 8851 arrives on the timetable: more than half a day, so not a connection we count.