AA 5161 then AA 5611 at Philadelphia
Knoxville → Philadelphia → Pittsburgh
Timetable, Philadelphia time
14:33AA 5161 from Knoxville at the gate
16:31AA 5611 to Pittsburgh leaves the gate
1 h 58 apart on the timetable
The last days
AA 5161 and AA 5611 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.