DL 706 then DL 1131 at Atlanta
Denver → Atlanta → Houston
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
16:12DL 1131 to Houston leaves the gate
22 h 11 apart on the timetable, overnight
DL 1131 leaves 22 h 11 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.