AA 2126 then CZ 2508 at O'Hare
Dallas-Fort Worth → Chicago → Guangzhou
Timetable, Chicago time
21:12AA 2126 from Dallas-Fort Worth at the gate
19:50CZ 2508 to Guangzhou leaves the gate
22 h 38 apart on the timetable, overnight
CZ 2508 leaves 22 h 38 after AA 2126 arrives on the timetable: more than half a day, so not a connection we count.