these investigations? >> other than my own presumption. >> neil: how far does someone's presumption go? >> it doesn't go anywhere. what i find interesting about these hearings is that they do not operate by the same rules as a criminal court of law would. so you get a speech, and you get from the witness, do you agree with my opinion? do you agree with my speech? do you agree with what some of the witness thought or perceived? that is not proof. they are going to need concrete proof that the president told somebody, look, don't write the check until this is done? then i think they will have a problem. >> neil: thank you very much. one of two other witnesses that will be testifying. this could go well into the night. let's get the read from gillian turner. how that of a night it could be. >> it could be a very late night