UA 6169 then DL 2709 at Houston
Indianapolis → Houston → Atlanta
Timetable, Houston time
10:52UA 6169 from Indianapolis at the gate
08:05DL 2709 to Atlanta leaves the gate
21 h 13 apart on the timetable, overnight
DL 2709 leaves 21 h 13 after UA 6169 arrives on the timetable: more than half a day, so not a connection we count.