GJ 8997 then JQ 8 at Changi
Hangzhou → Singapore → Melbourne
Timetable, Singapore time
14:55GJ 8997 from Hangzhou at the gate
21:00JQ 8 to Melbourne leaves the gate
6 h 05 apart on the timetable
The last days
GJ 8997 and JQ 8 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.