UA 1951 then DL 2709 at Houston
Orlando → Houston → Atlanta
Timetable, Houston time
13:39UA 1951 from Orlando at the gate
08:05DL 2709 to Atlanta leaves the gate
18 h 26 apart on the timetable, overnight
DL 2709 leaves 18 h 26 after UA 1951 arrives on the timetable: more than half a day, so not a connection we count.