UA 1059 then DL 2709 at Houston
Cancún → Houston → Atlanta
Timetable, Houston time
10:10UA 1059 from Cancún at the gate
08:05DL 2709 to Atlanta leaves the gate
21 h 55 apart on the timetable, overnight
DL 2709 leaves 21 h 55 after UA 1059 arrives on the timetable: more than half a day, so not a connection we count.