AA 4494 then Y8 7456 at O'Hare
Harrisburg → Chicago → Shanghai
Timetable, Chicago time
21:38AA 4494 from Harrisburg at the gate
19:10Y8 7456 to Shanghai leaves the gate
21 h 32 apart on the timetable, overnight
Y8 7456 leaves 21 h 32 after AA 4494 arrives on the timetable: more than half a day, so not a connection we count.