AA 4994 then UA 8160 at O'Hare
Oklahoma City → Chicago → Cleveland
Timetable, Chicago time
09:10AA 4994 from Oklahoma City at the gate
15:55UA 8160 to Cleveland leaves the gate
6 h 45 apart on the timetable
The last days
AA 4994 and UA 8160 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.