WN 574 then DL 2787 at Denver
San Francisco → Denver → Detroit
Timetable, Denver time
04:05WN 574 from San Francisco at the gate
10:36DL 2787 to Detroit leaves the gate
6 h 31 apart on the timetable
The last days
WN 574 and DL 2787 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.