AA 2780 then AA 2764 at Boston
Philadelphia → Boston → Miami (MIA)
Timetable, Boston time
10:25AA 2780 from Philadelphia at the gate
11:10AA 2764 to Miami (MIA) leaves the gate
45 min apart on the timetable
The last days
AA 2780 and AA 2764 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.