AA 6501 then CK 626 at O'Hare
Nashville → Chicago → Shanghai
Timetable, Chicago time
08:35AA 6501 from Nashville at the gate
00:01CK 626 to Shanghai leaves the gate
15 h 26 apart on the timetable, overnight
CK 626 leaves 15 h 26 after AA 6501 arrives on the timetable: more than half a day, so not a connection we count.