F9 4702 then DL 1939 at Atlanta
Austin → Atlanta → Cancún
Timetable, Atlanta time
19:10F9 4702 from Austin at the gate
18:35DL 1939 to Cancún leaves the gate
23 h 25 apart on the timetable, overnight
DL 1939 leaves 23 h 25 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.