They're having over 300hr off before departing after paxing over. Not joking.
Wrong!
The crew departed Brisbane on the QF 15 on Wednesday, operating (not paxing) to LAX and transited LAX to pax to JFK on the same aircraft.
They have about 55 hours in JFK before departing for Sydney.
This was the closest they could get to simulating an operation direct to JFK followed by a return to Sydney.
Not commenting on the validity or otherwise, just correcting an incorrect post.