F9 4567 then UA 5969 at Denver
St Louis → Denver → Salt Lake City
Timetable, Denver time
21:30F9 4567 from St Louis at the gate
20:30UA 5969 to Salt Lake City leaves the gate
23 h apart on the timetable, overnight
UA 5969 leaves 23 h after F9 4567 arrives on the timetable: more than half a day, so not a connection we count.