DL 1940 then WN 3519 at Salt Lake City
Chicago O'Hare → Salt Lake City → Denver
Timetable, Salt Lake City time
16:40DL 1940 from Chicago O'Hare at the gate
16:35WN 3519 to Denver leaves the gate
23 h 55 apart on the timetable, overnight
WN 3519 leaves 23 h 55 after DL 1940 arrives on the timetable: more than half a day, so not a connection we count.