AA 1152 then AA 1402 at Miami
Newark → Miami → Philadelphia
Timetable, Miami time
11:12AA 1152 from Newark at the gate
14:52AA 1402 to Philadelphia leaves the gate
3 h 40 apart on the timetable
The last days
AA 1152 and AA 1402 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.