AA 5191 then AA 5657 at Charlotte
Knoxville → Charlotte → Cincinnati
Timetable, Charlotte time
07:29AA 5191 from Knoxville at the gate
11:33AA 5657 to Cincinnati leaves the gate
4 h 04 apart on the timetable
The last days
AA 5191 and AA 5657 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.