AA 3783 then AA 1238 at Phoenix
Tucson → Phoenix → Ontario
Timetable, Phoenix time
12:25AA 3783 from Tucson at the gate
21:34AA 1238 to Ontario leaves the gate
9 h 09 apart on the timetable
The last days
AA 3783 and AA 1238 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.