WN 3752 then DL 4449 at Salt Lake City
San Diego → Salt Lake City → Colorado Springs
Timetable, Salt Lake City time
19:35WN 3752 from San Diego at the gate
15:41DL 4449 to Colorado Springs leaves the gate
20 h 06 apart on the timetable, overnight
DL 4449 leaves 20 h 06 after WN 3752 arrives on the timetable: more than half a day, so not a connection we count.