AA 2201 then CZ 2550 at O'Hare
Phoenix → Chicago → Guangzhou
Timetable, Chicago time
23:38AA 2201 from Phoenix at the gate
23:25CZ 2550 to Guangzhou leaves the gate
23 h 47 apart on the timetable, overnight
CZ 2550 leaves 23 h 47 after AA 2201 arrives on the timetable: more than half a day, so not a connection we count.