F9 4567 then UA 5669 at Denver
St Louis → Denver → Colorado Springs
Timetable, Denver time
21:30F9 4567 from St Louis at the gate
19:50UA 5669 to Colorado Springs leaves the gate
22 h 20 apart on the timetable, overnight
UA 5669 leaves 22 h 20 after F9 4567 arrives on the timetable: more than half a day, so not a connection we count.