HT 3819 then ZH 9867 at Guangzhou
Beijing Capital → Guangzhou → Nanjing
Timetable, Guangzhou time
05:15HT 3819 from Beijing Capital at the gate
11:35ZH 9867 to Nanjing leaves the gate
6 h 20 apart on the timetable
The last days
HT 3819 and ZH 9867 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.