Well from the day it was announced I knew medicals would come before interviews from official channels, I'm told it was part of the filtering process.
The process is different to pretty much any other recruitment process as very few other professions have legally prescribed medical requirements which would be a lot stricter to the average job required medical.
You can choose to believe your own conjecture or the facts that I got from HR, thats up to you.
I'm actually a bit surprised at the amount of people on this thread who put forward opinion or assumption as fact. It reduces it's helpfulness to be honest. If you're expressing an opinion it would be better to state it, otherwise people are being misled.