1.Once the lead supervisory authority has formed a preliminary view on the main issues in an investigation, it may cooperate with the other supervisory authorities concerned through a simple cooperation procedure, in accordance with this Article, where:
(a)it considers that no reasonable doubt exists as to the scope of the investigation, in particular with regard to the provisions of Regulation (EU) 2016/679 concerned by the alleged infringement which is to be investigated; and
(b)the legal and factual issues identified by the lead supervisory authority do not require the additional cooperation with the other supervisory authorities concerned that would be required for the purposes of a complex investigation, in particular where those issues can be addressed on the basis of previous decisions in similar cases.