AA 2644 then Y8 7456 at O'Hare
Pittsburgh → Chicago → Shanghai
Timetable, Chicago time
09:05AA 2644 from Pittsburgh at the gate
01:35Y8 7456 to Shanghai leaves the gate
16 h 30 apart on the timetable, overnight
Y8 7456 leaves 16 h 30 after AA 2644 arrives on the timetable: more than half a day, so not a connection we count.