DL 4190 then WN 170 at Salt Lake City
Aspen → Salt Lake City → Denver
Timetable, Salt Lake City time
15:07DL 4190 from Aspen at the gate
18:45WN 170 to Denver leaves the gate
3 h 38 apart on the timetable
The last days
DL 4190 and WN 170 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.