(c) The mediator for intensive mediation conducted under this rule shall be an active, senior active or retired superior court justice other than the justice to whom the case has been assigned for trial or who has presided over any pretrial hearings or ruled upon any pretrial motions. The justice who serves as mediator and all persons who participate in the mediation shall have no communication with the justice to whom the case is assigned for trial concerning the mediation or any matter pertaining to the merits of the case. All justices who serve as mediators pursuant to this rule shall have completed an approved mediation training program. The provisions of Rule 32(c)(3) shall apply to all superior court justices who serve as mediators under this rule. The litigants and counsel must recognize that the neutrals will not be acting as legal advisors or legal representatives. They must further recognize that, because the neutrals are performing quasi-judicial functions and are performing under the auspices of the Court, each such neutral has immunity from suit, and shall not be called as a witness in any subsequent proceeding relating to the parties' negotiations and/or his/her participation, except as set forth in Rule 32(d).