1.b) Both said they were not the inventors of Bitcoin. In a Web Summit in 2013, Michael Clear even reported publicly that he was not Satoshi Nakamoto.
Adam Penenberg of FastCompany denied the assumption and said that Satoshi Nakamoto is a group of three people: Neal King, Vladimir Oksman, and Charles Bry. He found out about this by stating different phrases from the published Whitepaper at Google to see if these word phrases had been found somewhere before.
It turned out later that one of the three was mentioned in a patent application for the update and distribution of cryptic keys. The Bitcoin.org domain that Satoshi Nakamoto used to publish the Whitepapers was registered and secured only 3 days after the patent application.