Hidden questions and which users can see them when viewing the interview

I know headquarters can see them when they are looking at the interview on the server but can Supervisors see hidden questions when they are reviewing the interview?

I have a bunch of hidden questions in my questionnaire and it would be easier for the supervisor to review an interview if they did not see them. It will clutter up the view and make it harder to see the answers for the interviewer questions. I currently have [HIDDEN] in the questionnaire text so it’s easier for tell them apart but it’s still clutter.