65.—(1) This regulation applies where a plan or project—
(a)is undertaken by more than one competent authority;
(b)requires the consent, permission or other authorisation of more than one competent authority; or
(c)is undertaken by one or more competent authorities and requires the consent, permission or other authorisation of one or more other competent authorities.
(2) Nothing in regulation 61(1) or 63(2) requires a competent authority to assess any implications of a plan or project which would be more appropriately assessed under that provision by another competent authority.
(3) The appropriate authority may issue guidance to competent authorities for the purposes of regulations 61 to 64 as to the circumstances in which a competent authority may or should adopt the reasoning or conclusions of another competent authority as to whether a plan or project—
(a)is likely to have a significant effect on a European site or a European offshore marine site; or
(b)will adversely affect the integrity of a European site or a European offshore marine site.
(4) The competent authorities concerned must have regard to any such guidance.
(5) In determining whether a plan or project should be agreed to under regulation 62 (considerations of overriding public interest), a competent authority other than the Secretary of State or the Welsh Ministers must seek and have regard to the views of the other competent authority or authorities involved.