BR 646 then UA 5751 at O'Hare
Anchorage → Chicago → Columbus (Ohio)
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
14:16UA 5751 to Columbus (Ohio) leaves the gate
21 h 06 apart on the timetable, overnight
UA 5751 leaves 21 h 06 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.