AA 725 then CA 1020 at O'Hare
Los Angeles → Chicago → Shanghai
Timetable, Chicago time
16:05AA 725 from Los Angeles at the gate
08:17CA 1020 to Shanghai leaves the gate
16 h 12 apart on the timetable, overnight
CA 1020 leaves 16 h 12 after AA 725 arrives on the timetable: more than half a day, so not a connection we count.