BR 646 then UA 4601 at O'Hare
Anchorage → Chicago → Columbia Regional
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
12:45UA 4601 to Columbia Regional leaves the gate
19 h 35 apart on the timetable, overnight
UA 4601 leaves 19 h 35 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.