AA 2393 then AA 6309 at Phoenix
Milwaukee → Phoenix → Tucson
Timetable, Phoenix time
17:35AA 2393 from Milwaukee at the gate
22:03AA 6309 to Tucson leaves the gate
4 h 28 apart on the timetable
The last days
AA 2393 and AA 6309 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.