AA 2437 then AA 5164 at Charlotte
Pittsburgh → Charlotte → Knoxville
Timetable, Charlotte time
09:35AA 2437 from Pittsburgh at the gate
18:21AA 5164 to Knoxville leaves the gate
8 h 46 apart on the timetable
The last days
AA 2437 and AA 5164 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.