AA 4272 then CZ 438 at O'Hare
Allentown → Chicago → Shanghai
Timetable, Chicago time
07:15AA 4272 from Allentown at the gate
01:45CZ 438 to Shanghai leaves the gate
18 h 30 apart on the timetable, overnight
CZ 438 leaves 18 h 30 after AA 4272 arrives on the timetable: more than half a day, so not a connection we count.