9C 6726 then 8L 9976 at Guangzhou
Ningbo → Guangzhou → Kunming
Timetable, Guangzhou time
22:159C 6726 from Ningbo at the gate
21:158L 9976 to Kunming leaves the gate
23 h apart on the timetable, overnight
8L 9976 leaves 23 h after 9C 6726 arrives on the timetable: more than half a day, so not a connection we count.