UA 575 then DL 2709 at Houston
New York LaGuardia → Houston → Atlanta
Timetable, Houston time
09:10UA 575 from New York LaGuardia at the gate
08:05DL 2709 to Atlanta leaves the gate
22 h 55 apart on the timetable, overnight
DL 2709 leaves 22 h 55 after UA 575 arrives on the timetable: more than half a day, so not a connection we count.