QF 2014 then QF 1282 at Sydney
OAG → Sydney → Brisbane
Timetable, Sydney time
07:45QF 2014 from OAG at the gate
08:35QF 1282 to Brisbane leaves the gate
50 min 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 2014 and QF 1282 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.