DL 2990 then DL 2735 at Atlanta
Jacksonville → Atlanta → Hartford
Timetable, Atlanta time
17:23DL 2990 from Jacksonville at the gate
15:59DL 2735 to Hartford leaves the gate
22 h 36 apart on the timetable, overnight
DL 2735 leaves 22 h 36 after DL 2990 arrives on the timetable: more than half a day, so not a connection we count.