AA 3740 then CK 626 at O'Hare
Sioux Falls → Chicago → Shanghai
Timetable, Chicago time
09:00AA 3740 from Sioux Falls at the gate
00:01CK 626 to Shanghai leaves the gate
15 h 01 apart on the timetable, overnight
CK 626 leaves 15 h 01 after AA 3740 arrives on the timetable: more than half a day, so not a connection we count.