The author of the written testimony shall be present at the hearing or meeting at which the written testimony is to be considered and shall be subject to examination or cross-examination by all interested parties, including but not limited to the applicant or the applicant’s representative, Board members, objectors or their representative, the municipal Public Advocate or Alternate Public Advocate, as the case may be, and such other interested parties who would be permitted to examine the witness had the testimony been submitted orally at the hearing or meeting.