AA 5380 then AA 3049 at Philadelphia
Milwaukee → Philadelphia → St Louis
Timetable, Philadelphia time
09:13AA 5380 from Milwaukee at the gate
15:22AA 3049 to St Louis leaves the gate
6 h 09 apart on the timetable
The last days
AA 5380 and AA 3049 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.