DL 2279 then DL 2735 at Atlanta
Philadelphia → Atlanta → Hartford
Timetable, Atlanta time
16:24DL 2279 from Philadelphia at the gate
15:40DL 2735 to Hartford leaves the gate
23 h 16 apart on the timetable, overnight
DL 2735 leaves 23 h 16 after DL 2279 arrives on the timetable: more than half a day, so not a connection we count.