DL 3719 then UA 5935 at Salt Lake City
Reno → Salt Lake City → Denver
Timetable, Salt Lake City time
12:18DL 3719 from Reno at the gate
18:16UA 5935 to Denver leaves the gate
5 h 58 apart on the timetable
The last days
DL 3719 and UA 5935 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.