UA 547 then DL 2709 at Houston
Kansas City → Houston → Atlanta
Timetable, Houston time
10:47UA 547 from Kansas City 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 547 arrives on the timetable: more than half a day, so not a connection we count.