AA 3879 then WN 490 at Phoenix
Memphis → Phoenix → Dallas
Timetable, Phoenix time
09:18AA 3879 from Memphis at the gate
10:10WN 490 to Dallas leaves the gate
52 min apart on the timetable
The last days
AA 3879 and WN 490 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.