QF 74 then QF 136 at Melbourne
Launceston → Melbourne → Sydney Kingsford Smith
Timetable, Melbourne time
14:35QF 74 from Launceston at the gate
19:40QF 136 to Sydney Kingsford Smith leaves the gate
5 h 05 apart on the timetable
The last days
QF 74 and QF 136 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.