I don't know how to answer that. I was in a college class being taught by a hypnotherapist. He tried to mass hypnotize the class. He did his whole routine and then instructed those who "went under" to ask specific questions when we woke up.
Now, the whole time I felt like I was in control. And yet, when I "woke up", I could not for the life of me stop myself from asking the question I was told to ask. I tried.
So, I do not know...