AA 6198 then UA 3755 at O'Hare
Oklahoma City → Chicago → Denver
Timetable, Chicago time
09:30AA 6198 from Oklahoma City at the gate
18:37UA 3755 to Denver leaves the gate
9 h 07 apart on the timetable
Today
From the airport’s board at 22:23 Chicago time
09:09AA 6198 reached the gate21 min early
18:32UA 3755 left the gate5 min early
9 h 23 between the gates
The last days
AA 6198 and UA 3755 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.