AA 3399 then AA 6309 at Phoenix
Monterrey → Phoenix → Tucson
Timetable, Phoenix time
18:50AA 3399 from Monterrey at the gate
22:03AA 6309 to Tucson leaves the gate
3 h 13 apart on the timetable
The last days
AA 3399 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.