It's complicated. Yes, we were doing the original GNW to Newcastle.
The 'new' route is kinda strange and puzzles me in many ways. You would think that the NSW Dept of Sport & Recreation would be tolerant of walkers going past or slightly through their site. But no: they get very aggro about any intrusions. I did ask about getting official permission but without joy. I have no idea why: bureaucracy and a dispute with Dept Lands I suspect.
In addition, while it is easy to get to the wharves below the ridge via the Dangar Island Ferry from Brooklyn, just try getting transport to the new landing point on the N side, way to the east. It would have cost us >$100 for a water taxi, and that was quite a few years ago. Absurd stuff.
So we said stuff it and did the original route. The ferry normally does not go to the most eastern jetty at the end of the houses as it belongs to Dept S&R, but the ferry master was very happy to drop us off there. It turns out that the offices which DS&R used to have at the jetty were long gone. The flat grassy site next to the wharf which remains was a nice camp site.