1. The rights of defence of the parties concerned shall be fully respected in ECB supervisory procedures. For this purpose, and after the opening of the ECB supervisory procedure, the parties shall be entitled to have access to the ECB’s file, subject to the legitimate interest of legal and natural persons other than the relevant party, in the protection of their business secrets. The right of access to the file shall not extend to confidential information. The NCAs shall forward to the ECB, without undue delay, any request received by them related to the access to files connected with ECB supervisory procedures.