Hmmm, interesting times there. That arrival time into SYD is rather awful for connections to other capital cities! I used to use QF81 to avoid clearing customs in SYD and riding the Thomas Train between terminals. Looks like that's gone south on me unless QF81 changes times too.
Which cities would they be? I kinda thought at around midday Qantas had more or less hourly flights to all the other capitals, though at that time Canberra will be a Dash-8..