AA 2184 then AA 2582 at Miami
Philadelphia → Miami → Boston
Timetable, Miami time
11:23AA 2184 from Philadelphia at the gate
12:21AA 2582 to Boston leaves the gate
58 min apart on the timetable
The last days
AA 2184 and AA 2582 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.