Snikeron, as far as I can gather, if they ask for you to confirm referee details, then you have passed the AC. If you did not pass the AC, they decide that on the day and I believe contact you within about a week. As they stated on the day, they are not concerned about filling a set number of positions, rather they accept anyone who fits their criteria.
I believe it took about 3 weeks for my referees to be contacted, but as I said, that was about 5 months ago now, and I still have not been formally offered a position despite having completed the medical and all the other stuff. The wheels of ATC HR grind exceedingly slow.
On a positive note, apparently the Federal Government are planning on combining civil and military air traffic control by 2021. This means that as a tower controller, you will also have Darwin, Townsville and Point Cook as possible locations.