I haven't heard any "excuses" so I don't have any idea what you're talking about.
No one said this:
Did I hear somebody said in this board phase2b/3 has started in Australia and Aussie government supports the trial?
The Aussie government will be supporting the 2/3, but what was posted is that recruitment has likely started. Because the 2-73 P2a has gotten a lot of media attention in Austrailia I'm sure they are collecting a lot of names of interested participants.
Trial criteria will be targeted at the most responsive patients to create the shortest, most responsive trial possible. At the end of that trial (which I expect to be successful) there will be a great deal of pressure on both the Australian and U.S. governments to approve the drug quickly because of the amount of money it will save government run healthcare systems. (Both Australia's Universal Healthcare system and Medicare are paying out a lot of money for little effect in Alzheimer's.)