DL 2804 then CA 8414 at O'Hare
Boston → Chicago → Shanghai
Timetable, Chicago time
22:36DL 2804 from Boston at the gate
20:45CA 8414 to Shanghai leaves the gate
22 h 09 apart on the timetable, overnight
CA 8414 leaves 22 h 09 after DL 2804 arrives on the timetable: more than half a day, so not a connection we count.