KJ 248 then DL 2739 at Atlanta
Chicago O'Hare → Atlanta → Hartford
Timetable, Atlanta time
14:25KJ 248 from Chicago O'Hare at the gate
13:53DL 2739 to Hartford leaves the gate
23 h 28 apart on the timetable, overnight
DL 2739 leaves 23 h 28 after KJ 248 arrives on the timetable: more than half a day, so not a connection we count.