Communications to the Commission, the Commission Counsel, the Disciplinary Counsel, or their staffs relating to misconduct or incapacity, as well as testimony given in all proceedings before the Commission, are absolutely privileged and no civil lawsuit predicated thereupon may be instituted against any complainant or witness. Members of the Commission, the Commission Counsel, the Disciplinary Counsel, and their staffs are absolutely immune from civil suit for all conduct in the course of their official duties.