JQ 7909 then QF 939 at Brisbane
Townsville → Brisbane → Perth
Timetable, Brisbane time
10:50JQ 7909 from Townsville at the gate
15:05QF 939 to Perth leaves the gate
4 h 15 apart on the timetable
Brisbane’s board shows about 66% of departures at their timetable time, so delays of a few minutes don’t show here.
The last days
JQ 7909 and QF 939 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.