AA 6503 then AA 2778 at Phoenix
El Paso → Phoenix → Boston
Timetable, Phoenix time
07:34AA 6503 from El Paso at the gate
13:43AA 2778 to Boston leaves the gate
6 h 09 apart on the timetable
The last days
AA 6503 and AA 2778 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.