AA 3495 then UA 3755 at O'Hare
Cincinnati Northern Kentucky → Chicago → Denver
Timetable, Chicago time
12:23AA 3495 from Cincinnati Northern Kentucky at the gate
18:37UA 3755 to Denver leaves the gate
6 h 14 apart on the timetable
Today
From the airport’s board at 19:23 Chicago time
12:21AA 3495 reached the gate2 min early
18:32UA 3755 left the gate5 min early
6 h 11 between the gates
The last days
AA 3495 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.