AA 4121 then Y8 7456 at O'Hare
Green Bay → Chicago → Shanghai
Timetable, Chicago time
07:27AA 4121 from Green Bay at the gate
01:35Y8 7456 to Shanghai leaves the gate
18 h 08 apart on the timetable, overnight
Y8 7456 leaves 18 h 08 after AA 4121 arrives on the timetable: more than half a day, so not a connection we count.