AA 839 then AS 606 at Phoenix
Detroit → Phoenix → Seattle
Timetable, Phoenix time
09:33AA 839 from Detroit at the gate
12:43AS 606 to Seattle leaves the gate
3 h 10 apart on the timetable
The last days
AA 839 and AS 606 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.