KJ 248 then DL 663 at Atlanta
Chicago O'Hare → Atlanta → Salt Lake City
Timetable, Atlanta time
14:25KJ 248 from Chicago O'Hare at the gate
11:45DL 663 to Salt Lake City leaves the gate
21 h 20 apart on the timetable, overnight
DL 663 leaves 21 h 20 after KJ 248 arrives on the timetable: more than half a day, so not a connection we count.