DL 706 then DL 2735 at Atlanta
Denver → Atlanta → Hartford
Timetable, Atlanta time
18:01DL 706 from Denver at the gate
15:40DL 2735 to Hartford leaves the gate
21 h 39 apart on the timetable, overnight
DL 2735 leaves 21 h 39 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.