F9 4427 then DL 592 at Atlanta
Baltimore → Atlanta → Cancún
Timetable, Atlanta time
12:52F9 4427 from Baltimore at the gate
12:25DL 592 to Cancún leaves the gate
23 h 33 apart on the timetable, overnight
DL 592 leaves 23 h 33 after F9 4427 arrives on the timetable: more than half a day, so not a connection we count.