DL 2391 then DL 2735 at Atlanta
Boston → Atlanta → Hartford
Timetable, Atlanta time
16:35DL 2391 from Boston at the gate
15:59DL 2735 to Hartford leaves the gate
23 h 24 apart on the timetable, overnight
DL 2735 leaves 23 h 24 after DL 2391 arrives on the timetable: more than half a day, so not a connection we count.