AA 2869 then AA 6436 at Phoenix
Chicago O'Hare → Phoenix → Tucson
Timetable, Phoenix time
20:36AA 2869 from Chicago O'Hare at the gate
20:12AA 6436 to Tucson leaves the gate
23 h 36 apart on the timetable, overnight
AA 6436 leaves 23 h 36 after AA 2869 arrives on the timetable: more than half a day, so not a connection we count.