AA 2196 then AA 6309 at Houston
Philadelphia → Houston → Los Angeles
Timetable, Houston time
11:34AA 2196 from Philadelphia at the gate
15:19AA 6309 to Los Angeles leaves the gate
3 h 45 apart on the timetable
The last days
AA 2196 and AA 6309 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.