AA 1504 then AA 6436 at Phoenix
Newark → Phoenix → Tucson
Timetable, Phoenix time
20:51AA 1504 from Newark at the gate
20:12AA 6436 to Tucson leaves the gate
23 h 21 apart on the timetable, overnight
AA 6436 leaves 23 h 21 after AA 1504 arrives on the timetable: more than half a day, so not a connection we count.