UA 708 then WN 2170 at Denver
Kansas City → Denver → St Louis
Timetable, Denver time
14:37UA 708 from Kansas City at the gate
14:20WN 2170 to St Louis leaves the gate
23 h 43 apart on the timetable, overnight
WN 2170 leaves 23 h 43 after UA 708 arrives on the timetable: more than half a day, so not a connection we count.