AA 2614 then CZ 2502 at O'Hare
San Francisco → Chicago → Shanghai
Timetable, Chicago time
12:29AA 2614 from San Francisco at the gate
01:45CZ 2502 to Shanghai leaves the gate
13 h 16 apart on the timetable, overnight
CZ 2502 leaves 13 h 16 after AA 2614 arrives on the timetable: more than half a day, so not a connection we count.