It's redundant.
Again, I call this the triple lock. Paragraph 8(b) is a lock. Clause 14 is a lock. Clause 16 is a lock. These are all means to deny access to the committee.
Moreover, incidentally, I would assume that the provisions in the Canada Evidence Act that allow a minister to issue a certificate and deny a disclosure of information could equally apply to this proceeding, as well as a court proceeding.