AA 1204 then CZ 436 at O'Hare
Miami → Chicago → Shanghai
Timetable, Chicago time
08:00AA 1204 from Miami at the gate
00:45CZ 436 to Shanghai leaves the gate
16 h 45 apart on the timetable, overnight
CZ 436 leaves 16 h 45 after AA 1204 arrives on the timetable: more than half a day, so not a connection we count.