AA 839 then WN 1552 at Phoenix
Detroit → Phoenix → Denver
Timetable, Phoenix time
09:33AA 839 from Detroit at the gate
19:45WN 1552 to Denver leaves the gate
10 h 12 apart on the timetable
The last days
AA 839 and WN 1552 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.