KR 935 then CZ 3873 at Guangzhou
Phnom Penh → Guangzhou → Hefei
Timetable, Guangzhou time
19:00KR 935 from Phnom Penh at the gate
13:10CZ 3873 to Hefei leaves the gate
18 h 10 apart on the timetable, overnight
CZ 3873 leaves 18 h 10 after KR 935 arrives on the timetable: more than half a day, so not a connection we count.