AA 861 then AA 1984 at Philadelphia
Miami → Philadelphia → Phoenix
Timetable, Philadelphia time
14:35AA 861 from Miami at the gate
17:35AA 1984 to Phoenix leaves the gate
3 h apart on the timetable
The last days
AA 861 and AA 1984 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.