Rugby League

The NRL All Stars team was released a few days back, and I was wondering (of course) why they don't do an NRL All Stars vs Super League All Stars( the English league)? They probably did ages ago, but I have no idea why they need to do NRL vs Indigenous All Stars, when they can do the NRL vs SPL All Stars(or Dream Teams?) I do get confused about the game of Rugby League.  (I am a big fan)