1. For the purposes of this Chapter, ‘the supervisory authorities concerned’ shall be the supervisory authorities of the Member States in which the head office of the subsidiaries for which permission to be subject to Articles 238 and 239 of Directive 2009/138/EC has been submitted are situated.
2. Where the parent undertaking decides to submit applications in relation to several subsidiaries at the same time, those applications shall be considered jointly by the group supervisor and the other supervisory authorities concerned in accordance with Article 237 of Directive 2009/138/EC.