On Wednesday 8 February, QF117, the 'second flight' from SYD to HKG departed at 1353, 28 minutes late but estimated arrival is not until 1950, 40 late.
A388 VH-OQG on QF2 from DXB this morning departed at 1107, 92 minutes tardy with Thursday 9 SYD arrival suggested as 0750, 80 late.
Meanwhile the Wednesday 8 February QF2, the 2045 hours evening departure from LHR has been altered to depart at an estimated 0845 hours on Thursday 9. Arrival in DXB should be at 2005 hours in lieu of the timetabled 0745, with consequent departure from the Middle East at 2145, 730 minutes behind schedule and arrival in ye olde Sydney town at a predicted 1830 on Friday 10 February, exactly 12 hours late.
This is because QF9 on Monday 7, the 2325 hours late night departure has been delayed until 1840 tonight (Wednesday 8) as per milehighclub's post above - more or less as I type this - with DXB arrival suggested as 0130 hours on Thursday 9, 19 hours late, departure from there at 0315 hours on Thursday 9 (18 hours 45 minutes late) and eventual LHR arrival of a predicted 0715 Thursday, 18 hours 35 minutes late. Quite often a bit more time than indicated can be picked up on the DXB - LHR sector but it is arriving at a peak time in the morning - granted though, LHR is extremely busy most of the time. This flight looks to be VH-OQK and is operating as QF9D - 'D' for 'delayed.'
90 minutes is a quick turnaround in LHR but if the flight arrives earlier than predicted it will have longer to depart at the predicted 0845 hours.
On Friday 10 February, QF2 looks - and I stress 'at this stage' - to be arriving at gate 24, the same gate from which QF127 from SYD to HKG (the 1100 shown still as an A388) is allegedly departing.
If I am not mistaken, the QF2 lengthy 12 hour delay may leave QF an A388 'short' in SYD on Friday 10 February, so will QF127 be changed (reduced) to an A333 or will it depart late, or will a QF60XX empty working operate (or one miraculously come down from MNL after maintenance) to fill what may be otherwise a void in availability of aircraft?
Perhaps with one cancellation already this week between DXB - LHR - DXB, it is difficult to continue with cancellations (as in terminating tonight - Wednesday's - delayed by 12 hours plus QF9 in DXB instead of operating it as scheduled through to LHR and back as QF2) - due not only to the buildup of passengers waiting for 'uplift' but also crew considerations. Presumably it is far from ideal for future roster availability (and morale) to have crew stuck in say LHR for days on end, far more than the scheduled layover.