AA 5550 then AA 5480 at Detroit
Charlotte → Detroit → Philadelphia
Timetable, Detroit time
10:30AA 5550 from Charlotte at the gate
11:41AA 5480 to Philadelphia leaves the gate
1 h 11 apart on the timetable
The last days
AA 5550 and AA 5480 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.