AA 2193 then CZ 2508 at O'Hare
Los Angeles → Chicago → Guangzhou
Timetable, Chicago time
22:30AA 2193 from Los Angeles at the gate
19:50CZ 2508 to Guangzhou leaves the gate
21 h 20 apart on the timetable, overnight
CZ 2508 leaves 21 h 20 after AA 2193 arrives on the timetable: more than half a day, so not a connection we count.