BR 646 then UA 5915 at O'Hare
Anchorage → Chicago → Toronto Pearson
Timetable, Chicago time
17:10BR 646 from Anchorage at the gate
15:47UA 5915 to Toronto Pearson leaves the gate
22 h 37 apart on the timetable, overnight
UA 5915 leaves 22 h 37 after BR 646 arrives on the timetable: more than half a day, so not a connection we count.