WN 591 then DL 2231 at Denver
Baltimore → Denver → Salt Lake City
Timetable, Denver time
10:15WN 591 from Baltimore at the gate
11:01DL 2231 to Salt Lake City leaves the gate
46 min apart on the timetable
The last days
WN 591 and DL 2231 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.