UA 356 then BR 658 at O'Hare
Phoenix → Chicago → Toronto Pearson
Timetable, Chicago time
12:39UA 356 from Phoenix at the gate
11:30BR 658 to Toronto Pearson leaves the gate
22 h 51 apart on the timetable, overnight
BR 658 leaves 22 h 51 after UA 356 arrives on the timetable: more than half a day, so not a connection we count.