AA 3918 then CZ 2502 at O'Hare
Greenville-Spartanburg → Chicago → Shanghai
Timetable, Chicago time
13:00AA 3918 from Greenville-Spartanburg at the gate
01:45CZ 2502 to Shanghai leaves the gate
12 h 45 apart on the timetable, overnight
CZ 2502 leaves 12 h 45 after AA 3918 arrives on the timetable: more than half a day, so not a connection we count.