CV 5482 then CV 12 at O'Hare
Zhengzhou → Chicago → Luxembourg
Timetable, Chicago time
10:50CV 5482 from Zhengzhou at the gate
03:46CV 12 to Luxembourg leaves the gate
16 h 56 apart on the timetable, overnight
CV 12 leaves 16 h 56 after CV 5482 arrives on the timetable: more than half a day, so not a connection we count.