Without knowing the actual cases I can't answer that. But anyone can claim anything. (I could claim to be the reincarnation of Cleopatra, and that I fully remember those wonderful days in Egypt with Marc Antony, and nobody would be able to prove that I wasn't. Just between the two of us, he was better in bed than Julius Caesar. But don't tell anyone else that.) At one time, when I was a lot younger, I looked very closely at many kinds of claims concerning what you might call "paranormal" experiences of one kind or another. None of them survived close scrutiny. Some people lie. Some people do not lie but misinterpret what they have experienced. Some people neither lie nor misinterpret, but others misinterpret what they are saying. Some claims that appear, at first sight, to be remarkable prove, on closer examination, to have mundane explanations. I have learned to be sceptical - very sceptical - about claims of those sorts.