AA 6186 then AA 1423 at Phoenix
Tucson → Phoenix → Ontario
Timetable, Phoenix time
08:05AA 6186 from Tucson at the gate
08:36AA 1423 to Ontario leaves the gate
31 min apart on the timetable
The last days
AA 6186 and AA 1423 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.