AA 6428 then AA 3381 at Phoenix
Reno → Phoenix → Monterrey
Timetable, Phoenix time
12:59AA 6428 from Reno at the gate
12:44AA 3381 to Monterrey leaves the gate
23 h 45 apart on the timetable, overnight
AA 3381 leaves 23 h 45 after AA 6428 arrives on the timetable: more than half a day, so not a connection we count.