AA 3591 then AA 2888 at Phoenix
Monterey → Phoenix → Boise
Timetable, Phoenix time
09:05AA 3591 from Monterey at the gate
10:04AA 2888 to Boise leaves the gate
59 min apart on the timetable
The last days
AA 3591 and AA 2888 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.