QF23 (1030 hours SYD-BKK) has been further delayed to an estimated 1405 hours out of Sydney for destination Bangkok, much as I opined.
Granted, aircraft can sometimes arrive a bit earlier than QFi or FR24/other sites predict, but if it's relatively easy for me to estimate when a flight may leave (based on historical, typical turnaround times), why can't airlines such as QFi initially post a more credible departure time rather than producing a wildly optimistic estimate that has little or no chance of becoming reality?
You wonder how much human intervention there is with published estimates on airline 'flight status' pages. If the answer is 'none' or 'very little', programmers ought be asked to make some changes. Rubbish in, rubbish out as the old saying goes.
UPDATE: The estimate has just changed again - to 1430 hours, four hours late. So probably arriving BKK at 1930 hours or later, with the 1800 hours QF24 BKK-SYD redeye perhaps able to push back at 2100 mid evening local time.
QF81 (1230 hours SYD-SIN) is further delayed to a suggested 1430 hours pushback this afternoon. Fortunately the timetable has a greater than minimum, 135 minute turnaround in Singapore (assuming it forms 'the 82', not always the case) so in theory it can catch up a little, but the 2005 hours redeye back to SYD (QF82) is likely to depart late if not swapping aircraft.