AA 4750 then AA 1155 at Philadelphia
Louisville → Philadelphia → Miami
Timetable, Philadelphia time
09:19AA 4750 from Louisville at the gate
14:55AA 1155 to Miami leaves the gate
5 h 36 apart on the timetable
The last days
AA 4750 and AA 1155 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.