NH 12 then BR 658 at O'Hare
Tokyo Narita → Chicago → Toronto Pearson
Timetable, Chicago time
13:50NH 12 from Tokyo Narita at the gate
11:30BR 658 to Toronto Pearson leaves the gate
21 h 40 apart on the timetable, overnight
BR 658 leaves 21 h 40 after NH 12 arrives on the timetable: more than half a day, so not a connection we count.