AA 1985 then AA 3104 at Miami
Philadelphia → Miami → Charlotte
Timetable, Miami time
12:45AA 1985 from Philadelphia at the gate
13:40AA 3104 to Charlotte leaves the gate
55 min apart on the timetable
The last days
AA 1985 and AA 3104 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.