“273. However, given the periods of inactivity identified above and the failure of the judicial authorities during these periods to take steps to progress matters of their own motion, the Court concludes that there has been a violation of Article 6 § 1 in the present case.” 43. A party does not have to raise an allegation of unreasonable delay at the first possible opportunity or, indeed, before the end of the initial proceedings - the CJEU said this Groupe Gascogne at [70]: “Althou gh a party must be able to raise a breach of procedure where it considers that a breach of the rules applicable is established, it cannot be required to do so at a stage where the full effects of that breach are not yet known. As regards, in particular, a failure to adjudicate within a reasonable time, an appellant which considers that such a failure prejudices its interests is not required to assert that prejudice immediately. Where appropriate, it may wait until the end of proceedings in order to ascertain the total duration of the prejudice and therefore to have all the information necessary to identify that which it has, in its view, sustained.”