ZL 6827 then QF 554 at Sydney
Dubbo → Sydney → Brisbane
Timetable, Sydney time
14:25ZL 6827 from Dubbo at the gate
19:50QF 554 to Brisbane leaves the gate
5 h 25 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
ZL 6827 and QF 554 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.