AA 1531 then AA 3430 at Phoenix
Chicago O'Hare → Phoenix → Eugene
Timetable, Phoenix time
20:07AA 1531 from Chicago O'Hare at the gate
17:57AA 3430 to Eugene leaves the gate
21 h 50 apart on the timetable, overnight
AA 3430 leaves 21 h 50 after AA 1531 arrives on the timetable: more than half a day, so not a connection we count.