AA 4994 then Y8 7456 at O'Hare
Oklahoma City → Chicago → Shanghai
Timetable, Chicago time
09:10AA 4994 from Oklahoma City at the gate
01:35Y8 7456 to Shanghai leaves the gate
16 h 25 apart on the timetable, overnight
Y8 7456 leaves 16 h 25 after AA 4994 arrives on the timetable: more than half a day, so not a connection we count.