AA 6306 then AA 3951 at Phoenix
San Diego → Phoenix → Tucson
Timetable, Phoenix time
07:56AA 6306 from San Diego at the gate
14:36AA 3951 to Tucson leaves the gate
6 h 40 apart on the timetable
The last days
AA 6306 and AA 3951 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.