Article 38 2.

Where a national competent authority of the Member States enforcing the rules referred to in Article 1(6) intends to launch an investigation on gatekeepers based on national laws referred to in Article 1(6), it shall inform the Commission in writing of the first formal investigative measure, before or immediately after the start of such measure. This information may also be made available to the national competent authorities enforcing the rules referred to in Article 1(6) of the other Member States.