AA 1428 then UA 1225 at Phoenix
DES → Phoenix → Newark
Timetable, Phoenix time
10:29AA 1428 from DES at the gate
11:39UA 1225 to Newark leaves the gate
1 h 10 apart on the timetable
The last days
AA 1428 and UA 1225 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.