AA 9975 then G4 3049 at Philadelphia
Erie → Philadelphia → Knoxville
Timetable, Philadelphia time
10:47AA 9975 from Erie at the gate
15:37G4 3049 to Knoxville leaves the gate
4 h 50 apart on the timetable
The last days
AA 9975 and G4 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.