AA 1418 then AA 533 at Miami
Boston → Miami → Philadelphia
Timetable, Miami time
08:27AA 1418 from Boston at the gate
09:05AA 533 to Philadelphia leaves the gate
38 min apart on the timetable
The last days
AA 1418 and AA 533 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.