AA 4476 then AA 5337 at Philadelphia
Louisville → Philadelphia → Cincinnati
Timetable, Philadelphia time
09:30AA 4476 from Louisville at the gate
16:15AA 5337 to Cincinnati leaves the gate
6 h 45 apart on the timetable
The last days
AA 4476 and AA 5337 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.