Its too messy for them to touch.  They were going to (touch it) in 1850, but backed off.  The NSW and Victorian Governors finally gazetted/fixed the curly bit of the boundary in March or so this year, but no one will go near the other.  Its all fully documented in various places.  Alas, I am blocked from contributing by that totally psycho playschooler, Artkos, so had better start taking notice so he gets his jollies today ... eh?