I applied back in 2012 before they closed it. Back then I had 0 hours.
Then I updated my application initially in late November 2014 and received an email in Jan.
It is all about location for AE and where the roadshows are happening. If you are waiting for a UK interview for example, you won't hear anything until they are ready to start recruitment days in the UK. Maybe 2/3 weeks before said date