Don't get too excited. Miracles are rare, and as the Catholic Church correctly suggests, have a lot of requirements before acceptance.
Perhaps proving my point, QF1 on Sunday 10 July 2022 (the 1555 hours mid afternoon SYD - SIN - LHR) is altered to depart at 2100 hours mid evening (although FR24 suggests '2000 hours'). Let's hope for passengers booked that this doesn't translate into an unexpected overnight stay in Sydney. A388 VH-OQJ arrrived this morning in SYD at 0607, 57 late as QF2 ex SIN and before that LHR, so I don't know why tonight's return (should be the same aircraft) is delayed.
A332 VH-EBQ arrived on Saturday 9 in DEL (QF69) at 1850 hours, 50 late, so the return working QF70, the redeye, should be back in MEL this afternoon at 1403 hours, 63 minutes behind schedule.
When checking early this morning, fog in Melbourne wasn't causing any noticeable delays, but QF151 (0710 hours MEL - AKL, B738 VH-VZW) was not airborne until 0759, suggesting at gate arrival of 1316 hours, 31 minutes tardy.