If the acquirer of the holdings referred to in Article 19 is an insurance undertaking, a reinsurance undertaking, a credit institution or an investment firm authorised in another Member State, or the parent undertaking of such an entity, or a natural or legal person controlling such an entity, and if, as a result of that acquisition, the undertaking in which the acquirer proposes to acquire such a holding would become a subsidiary or subject to the control of the acquirer, the assessment of the acquisition must be subject to the prior consultation referred to in Article 14.