AA 2474 then BR 643 at O'Hare
Phoenix → Chicago → Anchorage
Timetable, Chicago time
14:33AA 2474 from Phoenix at the gate
11:55BR 643 to Anchorage leaves the gate
21 h 22 apart on the timetable, overnight
BR 643 leaves 21 h 22 after AA 2474 arrives on the timetable: more than half a day, so not a connection we count.