F9 3206 then DL 2709 at Houston
Denver → Houston → Atlanta
Timetable, Houston time
09:52F9 3206 from Denver at the gate
08:05DL 2709 to Atlanta leaves the gate
22 h 13 apart on the timetable, overnight
DL 2709 leaves 22 h 13 after F9 3206 arrives on the timetable: more than half a day, so not a connection we count.