5. Where a national regulatory authority or other competent authorities considers information to be confidential in accordance with Union and national rules on business confidentiality, the Commission, BEREC and any other national regulatory authority or other competent authority concerned shall ensure such confidentiality. Business confidentiality shall not prevent the timely sharing of information between the national regulatory authority or other competent authorities, the Commission, BEREC and any other national regulatory authorities or other competent authorities concerned, for the purposes of reviewing, monitoring and supervising the application of this Regulation.