DL 706 then DL 2879 at Atlanta
Denver → Atlanta → Chicago O'Hare
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
17:45DL 2879 to Chicago O'Hare leaves the gate
23 h 44 apart on the timetable, overnight
DL 2879 leaves 23 h 44 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.