AA 986 then CA 1020 at O'Hare
Baltimore → Chicago → Shanghai
Timetable, Chicago time
08:50AA 986 from Baltimore at the gate
01:05CA 1020 to Shanghai leaves the gate
16 h 15 apart on the timetable, overnight
CA 1020 leaves 16 h 15 after AA 986 arrives on the timetable: more than half a day, so not a connection we count.