1. Member States shall ensure that, where the parent undertaking of one or more insurance or reinsurance undertakings is a mixed-activity insurance holding company, the supervisory authorities responsible for the supervision of those insurance or reinsurance undertakings exercise general supervision over transactions between those insurance or reinsurance undertakings and the mixed-activity holding company and its related undertakings.
2. Articles 245, 249 to 255 and 258 shall apply mutatis mutandis.