QF 1420 then QF 423 at Sydney
Canberra → Sydney → Melbourne
Timetable, Sydney time
07:05QF 1420 from Canberra at the gate
08:45QF 423 to Melbourne leaves the gate
1 h 40 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 1420 and QF 423 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.