UA 1139 then BR 643 at O'Hare
Columbus (Ohio) → Chicago → Anchorage
Timetable, Chicago time
14:55UA 1139 from Columbus (Ohio) at the gate
14:50BR 643 to Anchorage leaves the gate
23 h 55 apart on the timetable, overnight
BR 643 leaves 23 h 55 after UA 1139 arrives on the timetable: more than half a day, so not a connection we count.