Must Article 146(1)(e) of Council Directive 2006/112/EC be interpreted as meaning that the exemption laid down therein is applicable only where there is a direct legal connection or a reciprocal contractual relationship between the services provider and the consignee or the consignor of the goods? What criteria must be met by the direct connection referred to in the abovementioned provision in order for a service connected with the importation or exportation of goods to be exempt?