AA 1409 then CZ 438 at O'Hare
Charlotte → Chicago → Shanghai
Timetable, Chicago time
09:00AA 1409 from Charlotte at the gate
01:45CZ 438 to Shanghai leaves the gate
16 h 45 apart on the timetable, overnight
CZ 438 leaves 16 h 45 after AA 1409 arrives on the timetable: more than half a day, so not a connection we count.