AA 927 then CA 8414 at O'Hare
Boston → Chicago → Shanghai
Timetable, Chicago time
21:29AA 927 from Boston at the gate
20:45CA 8414 to Shanghai leaves the gate
23 h 16 apart on the timetable, overnight
CA 8414 leaves 23 h 16 after AA 927 arrives on the timetable: more than half a day, so not a connection we count.