AA 1559 then AA 3907 at Phoenix
Tucson → Phoenix → Boise
Timetable, Phoenix time
11:22AA 1559 from Tucson at the gate
15:46AA 3907 to Boise leaves the gate
4 h 24 apart on the timetable
The last days
AA 1559 and AA 3907 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.