QF 1283 then QF 429 at Sydney
Brisbane → Sydney → Melbourne
Timetable, Sydney time
07:35QF 1283 from Brisbane at the gate
09:35QF 429 to Melbourne leaves the gate
2 h 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
QF 1283 and QF 429 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.