AA 2732 then UA 2765 at Phoenix
Madison → Phoenix → Chicago O'Hare
Timetable, Phoenix time
10:01AA 2732 from Madison at the gate
14:37UA 2765 to Chicago O'Hare leaves the gate
4 h 36 apart on the timetable
The last days
AA 2732 and UA 2765 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.