AQ 1730 then 9C 6725 at Guangzhou
Harbin → Guangzhou → Ningbo
Timetable, Guangzhou time
00:25AQ 1730 from Harbin at the gate
16:109C 6725 to Ningbo leaves the gate
15 h 45 apart on the timetable
9C 6725 leaves 15 h 45 after AQ 1730 arrives on the timetable: more than half a day, so not a connection we count.