AA 5200 then AA 5215 at Philadelphia
Milwaukee → Philadelphia → Nashville
Timetable, Philadelphia time
11:39AA 5200 from Milwaukee at the gate
15:39AA 5215 to Nashville leaves the gate
4 h apart on the timetable
The last days
AA 5200 and AA 5215 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.