3S 442 then Y8 7456 at O'Hare
Toronto Pearson → Chicago → Shanghai
Timetable, Chicago time
23:323S 442 from Toronto Pearson at the gate
19:10Y8 7456 to Shanghai leaves the gate
19 h 38 apart on the timetable, overnight
Y8 7456 leaves 19 h 38 after 3S 442 arrives on the timetable: more than half a day, so not a connection we count.