¹In the cases referred to in paragraphs 1 and 2, the Board shall issue an opinion on the matter submitted to it provided that it has not already issued an opinion on the same matter. ²That opinion shall be adopted within eight weeks by simple majority of the members of the Board. ³That period may be extended by a further six weeks, taking into account the complexity of the subject matter. ⁴Regarding the draft decision referred to in paragraph 1 circulated to the members of the Board in accordance with paragraph 5, a member which has not objected within a reasonable period indicated by the Chair, shall be deemed to be in agreement with the draft decision.