When a conceding authority concludes a single contract relating to objectively indissociable services which are covered both by the ordinary law of contracts provided for in Book I of Part Two or Book II relating to partnership contracts and by the ordinary law of concession contracts provided for in Book I of Part Three, this contract is subject to the provisions applicable to its main subject.
For the application of this article, when the contract relates to services which are covered by both service concession contracts and public supply contracts, its main subject is determined according to the highest estimated value of these respective services or supplies.