AA 2123 then CK 626 at O'Hare
Los Angeles → Chicago → Shanghai
Timetable, Chicago time
20:04AA 2123 from Los Angeles at the gate
19:15CK 626 to Shanghai leaves the gate
23 h 11 apart on the timetable, overnight
CK 626 leaves 23 h 11 after AA 2123 arrives on the timetable: more than half a day, so not a connection we count.