Can an ELTIF acquire equity or debt instruments issued by another collective investment scheme (CIS) or grant loans to another CIS, i.e. can CISs qualify as qualifying portfolio undertaking as referred to in points a), b) and c) of Article 10(1) of the ELTIF Regulation? If yes, would the conditions set under article 11 or under article 10(1)d) apply? And would the look-through approach referred to in Article 10(2) of the ELTIF Regulation apply in this case, in particular for debt instruments referred to in Article 10(1)(b) of that Regulation issued by CIS, if CIS can qualify as “qualifying portfolio undertaking as referred to in Article 11?