UA 4065 then DL 2709 at Houston
Columbus (Ohio) → Houston → Atlanta
Timetable, Houston time
13:40UA 4065 from Columbus (Ohio) at the gate
08:05DL 2709 to Atlanta leaves the gate
18 h 25 apart on the timetable, overnight
DL 2709 leaves 18 h 25 after UA 4065 arrives on the timetable: more than half a day, so not a connection we count.