4. This Directive shall not apply to digital content or digital services which are incorporated in or inter-connected with goods within the meaning of point (3) of Article 2, and which are provided with the goods under a sales contract concerning those goods, irrespective of whether such digital content or digital service is supplied by the seller or by a third party. In the event of doubt as to whether the supply of incorporated or inter-connected digital content or an incorporated or inter-connected digital service forms part of the sales contract, the digital content or digital service shall be presumed to be covered by the sales contract.