AA 3340 then CA 1020 at O'Hare
Nashville → Chicago → Shanghai
Timetable, Chicago time
12:40AA 3340 from Nashville at the gate
08:17CA 1020 to Shanghai leaves the gate
19 h 37 apart on the timetable, overnight
CA 1020 leaves 19 h 37 after AA 3340 arrives on the timetable: more than half a day, so not a connection we count.