9C 6726 then ZH 8989 at Guangzhou
Ningbo → Guangzhou → Huangyan
Timetable, Guangzhou time
22:159C 6726 from Ningbo at the gate
17:00ZH 8989 to Huangyan leaves the gate
18 h 45 apart on the timetable, overnight
ZH 8989 leaves 18 h 45 after 9C 6726 arrives on the timetable: more than half a day, so not a connection we count.