AA 4483 then CA 1020 at O'Hare
Baltimore → Chicago → Shanghai
Timetable, Chicago time
13:18AA 4483 from Baltimore at the gate
08:17CA 1020 to Shanghai leaves the gate
18 h 59 apart on the timetable, overnight
CA 1020 leaves 18 h 59 after AA 4483 arrives on the timetable: more than half a day, so not a connection we count.