DL 1625 then DL 586 at Atlanta
Memphis → Atlanta → Cancún
Timetable, Atlanta time
10:30DL 1625 from Memphis at the gate
09:45DL 586 to Cancún leaves the gate
23 h 15 apart on the timetable, overnight
DL 586 leaves 23 h 15 after DL 1625 arrives on the timetable: more than half a day, so not a connection we count.