DL 2461 then DL 1939 at Atlanta
Dayton → Atlanta → Cancún
Timetable, Atlanta time
20:33DL 2461 from Dayton at the gate
18:29DL 1939 to Cancún leaves the gate
21 h 56 apart on the timetable, overnight
DL 1939 leaves 21 h 56 after DL 2461 arrives on the timetable: more than half a day, so not a connection we count.