AA 6247 then BR 643 at O'Hare
Columbus (Ohio) → Chicago → Anchorage
Timetable, Chicago time
14:20AA 6247 from Columbus (Ohio) at the gate
11:55BR 643 to Anchorage leaves the gate
21 h 35 apart on the timetable, overnight
BR 643 leaves 21 h 35 after AA 6247 arrives on the timetable: more than half a day, so not a connection we count.