CZ 340 then HU 7233 at Guangzhou
Seoul → Guangzhou → Ningbo
Timetable, Guangzhou time
12:10CZ 340 from Seoul at the gate
07:25HU 7233 to Ningbo leaves the gate
19 h 15 apart on the timetable, overnight
HU 7233 leaves 19 h 15 after CZ 340 arrives on the timetable: more than half a day, so not a connection we count.