This enquiry is just going to continue to get delayed and stretched out until they find evidence that supports their theory and only then will any announcments be made. The longer it goes on the worse it looks for them, if the had sufficient evidence they would have already made an announcement of findings by now. They arent going to end it and just say well that was a waste of time and tax payers money we didn't find anything, apologises for the inconvenience airlines.