I've been monitoring this thread for the past 2 months or so and it's quite clear that not a lot of people are being invited or even contacted after the intial application.
Also, having a few friends who have been to the assessment, it seems that it's all a bit of a lottery of being contacted. Some being called after a week, 2 weeks, 2 months etc. What on earth is the logic in that as the inital application does not ask for training passes and course performance. I can't really think of how it can be filtered to CAE's liking.
Just for your information:
26 year old, first time passes etc and a British Citizen. 2 months since completing the application without any confirmation.