JohnSkold, many thanks. As discussed above, on Thursday 15, QF7 arrived DFW at 2203 hours rather than the afternoon 1300 hours timetabled, so that (rest period) may well have something to do with how QF8 on Saturday night is estimated to push back at 0125 on Sunday 18. The 0930 hours suggested at gate arrival in SYD on Monday morning 19 August 2019 (instead of scheduled 0625) should ideally see you with a choice of which CBR-bound flight you take. Good luck with the upgrade!...QF8 DFW-SYD for 17th Aug (OQC) has been delayed to the early hours of the 18th, departing Terminal D at 0125 and arriving at Sydney on Monday 0925, for a ~3 hour delay. Hopefully a more leisurely connection in SYD.
Qantas don't seem to be having a great run recently with these USA-AUS legs....
It's not just USA - AUS sectors on which QFi runs late, or cancels. BKK, JNB, LAX, LHR, MNL, PVG and SIN are a selection of destinations where QFi passengers have recently suffered significant delays or cancellations (apart from the industry-wide problems in HKG). Unfortunately QFi almost daily is significantly delaying a goodly number of passengers. Its timekeeping is less than ideal on many routes. There are way too many cancellations compared against best in the world SQ or many other competitors, despite most of the latter not being based in Oz.
Just why so many Australians continue to patronise QFi when on many routes there are better and cheaper alternatives would be a mystery, but often, patrons have little choice as they are automatically booked on it by corporates or government entities.