'Closely related counterparties' are two or more counterparties who constitute a single risk because one of them has, directly or indirectly, a controlling interest in the other(s) (i.e. 20% or more voting rights), or counterparties connected in such a way that the financial soundness of any one of them may affect the financial soundness of the other(s), or the same factors may affect the financial soundness of both or all of them.