AA 9908 then UA 5941 at O'Hare
Milwaukee → Chicago → Tucson
Timetable, Chicago time
13:50AA 9908 from Milwaukee at the gate
15:35UA 5941 to Tucson leaves the gate
1 h 45 apart on the timetable
The last days
AA 9908 and UA 5941 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.