They are lying. They don't want to talk to the FBI. Have any of them told the truth about anything?
They want to delay the proceedings until after November. They will find every excuse they can not to submit to an FBI interrogation. An FBI interrogation of a witness is a perjury trap. Just ask Papadapoulis and Flynn.
I am really worried they are trying frame Judge Kavanaugh and will do so by any means necessary.