CZ 678 then K6 669 at Guangzhou
Luxembourg → Guangzhou → Phnom Penh
Timetable, Guangzhou time
14:55CZ 678 from Luxembourg at the gate
13:25K6 669 to Phnom Penh leaves the gate
22 h 30 apart on the timetable, overnight
K6 669 leaves 22 h 30 after CZ 678 arrives on the timetable: more than half a day, so not a connection we count.