AA 2743 then AA 938 at Philadelphia
Boston → Philadelphia → Charlotte
Timetable, Philadelphia time
11:10AA 2743 from Boston at the gate
15:06AA 938 to Charlotte leaves the gate
3 h 56 apart on the timetable
The last days
AA 2743 and AA 938 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.