UA 2611 then DL 2709 at Houston
Orlando → Houston → Atlanta
Timetable, Houston time
10:47UA 2611 from Orlando at the gate
08:05DL 2709 to Atlanta leaves the gate
21 h 18 apart on the timetable, overnight
DL 2709 leaves 21 h 18 after UA 2611 arrives on the timetable: more than half a day, so not a connection we count.