AA 4226 then CZ 2502 at O'Hare
Dayton → Chicago → Shanghai
Timetable, Chicago time
11:59AA 4226 from Dayton at the gate
01:45CZ 2502 to Shanghai leaves the gate
13 h 46 apart on the timetable, overnight
CZ 2502 leaves 13 h 46 after AA 4226 arrives on the timetable: more than half a day, so not a connection we count.