AA 2407 then AM 4186 at San Francisco
Philadelphia → San Francisco → Atlanta
Timetable, San Francisco time
11:35AA 2407 from Philadelphia at the gate
22:59AM 4186 to Atlanta leaves the gate
11 h 24 apart on the timetable
The last days
AA 2407 and AM 4186 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.