WN 500 then DL 1655 at San Francisco
Denver → San Francisco → Boston
Timetable, San Francisco time
21:05WN 500 from Denver at the gate
21:58DL 1655 to Boston leaves the gatealso VS 2642, LA 6808
53 min apart on the timetable
The last days
WN 500 and DL 1655 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.