I'm just curious how transit works in Oz. I've never transited in Australia as my start/end point is Sydney.
My impression was that when you left your arriving flight, you would enter the airside of the terminal (mixing with other departing passengers who have cleared immigration and security). Then at the appropriate time you made your way to the gate, went through security like other departing passengers, and boarded the plane.
I gather from the comments here that my impression is wrong. Exactly how does it work?