AA 1106 then UA 5207 at O'Hare
Dallas-Fort Worth → Chicago → Denver
Timetable, Chicago time
10:00AA 1106 from Dallas-Fort Worth at the gate
21:00UA 5207 to Denver leaves the gate
11 h apart on the timetable
The last days
AA 1106 and UA 5207 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.