KJ 248 then DL 746 at Atlanta
Chicago O'Hare → Atlanta → Denver
Timetable, Atlanta time
19:54KJ 248 from Chicago O'Hare at the gate
18:58DL 746 to Denver leaves the gate
23 h 04 apart on the timetable, overnight
DL 746 leaves 23 h 04 after KJ 248 arrives on the timetable: more than half a day, so not a connection we count.