UA 4509 then BR 643 at O'Hare
State College → Chicago → Anchorage
Timetable, Chicago time
14:55UA 4509 from State College at the gate
11:25BR 643 to Anchorage leaves the gate
20 h 30 apart on the timetable, overnight
BR 643 leaves 20 h 30 after UA 4509 arrives on the timetable: more than half a day, so not a connection we count.