TR 58 then QF 1989 at Melbourne
Singapore → Melbourne → Sydney Kingsford Smith
Timetable, Melbourne time
12:10TR 58 from Singapore at the gate
20:15QF 1989 to Sydney Kingsford Smith leaves the gate
8 h 05 apart on the timetable
The last days
TR 58 and QF 1989 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.