DL 1492 then DL 3788 at Salt Lake City
St Louis → Salt Lake City → Colorado Springs
Timetable, Salt Lake City time
21:18DL 1492 from St Louis at the gate
20:40DL 3788 to Colorado Springs leaves the gate
23 h 22 apart on the timetable, overnight
DL 3788 leaves 23 h 22 after DL 1492 arrives on the timetable: more than half a day, so not a connection we count.