AA 9928 then Y8 7456 at O'Hare
New York LaGuardia → Chicago → Shanghai
Timetable, Chicago time
06:45AA 9928 from New York LaGuardia at the gate
19:10Y8 7456 to Shanghai leaves the gate
12 h 25 apart on the timetable
Y8 7456 leaves 12 h 25 after AA 9928 arrives on the timetable: more than half a day, so not a connection we count.