AA 4751 then UA 1548 at O'Hare
Knoxville → Chicago → Cleveland
Timetable, Chicago time
08:39AA 4751 from Knoxville at the gate
10:45UA 1548 to Cleveland leaves the gate
2 h 06 apart on the timetable
The last days
AA 4751 and UA 1548 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.