WN 1801 then DL 653 at Atlanta
Denver → Atlanta → Salt Lake City
Timetable, Atlanta time
18:35WN 1801 from Denver at the gate
17:58DL 653 to Salt Lake City leaves the gate
23 h 23 apart on the timetable, overnight
DL 653 leaves 23 h 23 after WN 1801 arrives on the timetable: more than half a day, so not a connection we count.