GA 712 then QF 453 at Sydney
Jakarta → Sydney → Melbourne
Timetable, Sydney time
07:25GA 712 from Jakarta at the gate
15:00QF 453 to Melbourne leaves the gate
7 h 35 apart on the timetable
Sydney’s board shows about 68% of departures at their timetable time, so delays of a few minutes don’t show here.
The last days
GA 712 and QF 453 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.