UA 1976 then DL 2709 at Houston
Charleston (South Carolina) → Houston → Atlanta
Timetable, Houston time
08:26UA 1976 from Charleston (South Carolina) at the gate
08:05DL 2709 to Atlanta leaves the gate
23 h 39 apart on the timetable, overnight
DL 2709 leaves 23 h 39 after UA 1976 arrives on the timetable: more than half a day, so not a connection we count.