(a) Ex parte communications. After an umpire is selected and before the appraisal is completely resolved:(1) The umpire may not communicate separately with either party or either party's appraiser regarding the pending appraisal unless the umpire notifies the other party and gives the other party the opportunity to participate.(2) No party or appraiser may communicate with the umpire regarding the pending appraisal without including the other party or appraiser, except that:(A) an appraiser may identify the parties' counsel or experts;(B) an appraiser may discuss logistical matters, such as setting the time and place of meetings or making other arrangements for the conduct of the proceedings. The appraiser initiating this contact with the umpire must promptly inform the other appraiser; or(C) if an appraiser fails to attend a meeting or conference call after receiving notice, or if both parties agree in writing, the opposing appraiser may discuss the claim with the umpire who is present.(b) Confidentiality. After an umpire is notified that the umpire may be on an umpire selection panel, the umpire may not at any time communicate any information about the appraisal with anyone besides the parties, the association, the appraisers, and the department. However, the umpire may communicate information about the appraisal with the written consent of the parties.