AA 5358 then G4 3056 at Philadelphia
Nashville → Philadelphia → Knoxville
Timetable, Philadelphia time
12:09AA 5358 from Nashville at the gate
15:57G4 3056 to Knoxville leaves the gate
3 h 48 apart on the timetable
The last days
AA 5358 and G4 3056 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.