AA 317 then G7 166 at O'Hare
Denver → Chicago → Madison
Timetable, Chicago time
10:04AA 317 from Denver at the gate
10:55G7 166 to Madison leaves the gate
51 min apart on the timetable
The last days
AA 317 and G7 166 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.