AA 3071 then AA 279 at Dulles
Los Angeles → Washington → Philadelphia
Timetable, Washington time
04:35AA 3071 from Los Angeles at the gate
15:15AA 279 to Philadelphia leaves the gate
10 h 40 apart on the timetable
The last days
AA 3071 and AA 279 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.