I can confirm at least 5 teams seen at the airport on QF21. Someone at the airport was speaking with 3 of the teams:
"went to ask for a photo, for obvious reasons, they declined, but was a able to get one of their Travel books for Australia signed by 6 [individuals] of them. From the book, (and the notes they scribbled) they had to pick up cars in the outback (broken hill), caught the indian pacific back to sydney, they had a few places in Sydney marked on the map, bridge climb and the Pitt - Market and Castlereagh st area, as well as town hall."
I am trying to get more info now! Hope to be able to work out who was on QF21 soon!