AA 6300 then CZ 438 at O'Hare
Columbus (Ohio) → Chicago → Shanghai
Timetable, Chicago time
11:00AA 6300 from Columbus (Ohio) at the gate
01:45CZ 438 to Shanghai leaves the gate
14 h 45 apart on the timetable, overnight
CZ 438 leaves 14 h 45 after AA 6300 arrives on the timetable: more than half a day, so not a connection we count.