AA 3190 then CZ 2502 at O'Hare
New York LaGuardia → Chicago → Shanghai
Timetable, Chicago time
10:00AA 3190 from New York LaGuardia at the gate
01:45CZ 2502 to Shanghai leaves the gate
15 h 45 apart on the timetable, overnight
CZ 2502 leaves 15 h 45 after AA 3190 arrives on the timetable: more than half a day, so not a connection we count.