AA 2576 then CZ 436 at O'Hare
Charlotte → Chicago → Shanghai
Timetable, Chicago time
20:04AA 2576 from Charlotte at the gate
18:50CZ 436 to Shanghai leaves the gate
22 h 46 apart on the timetable, overnight
CZ 436 leaves 22 h 46 after AA 2576 arrives on the timetable: more than half a day, so not a connection we count.