How would the operator know? Doesn't sound like a definitive response.
While it's academic for you now, QF37 departed MEL on Sunday 10 June at 1754 with SIN arrival expected at 2345. QF1 will be a little early into SIN at this stage.
A minute out from Flyerqf's prediction, QF73 departed at 1656, 251 minutes tardy. Same day SFO arrival is estimated as 1320 hours, 255 late.
