Is the expression ‘a person normally employed in the territory of two or more Member States’ used in the first sentence of Article 14(2) of Council Regulation (EEC) No 1408/71 of 14 June 1971 on the application of social security schemes to employed persons and their families moving within the Community, in the version resulting from Council Regulation (EC) No 118/97 of 2 December 1996, as amended by Regulation (EC) No 1992/2006 of the European Parliament and of the Council of 18 December 2006, to be interpreted as also applying to a person who, during the period covered by and within the framework of one and the same contract of employment concluded with a single employer, performs work in the territory of each of at least two Member States not simultaneously or concurrently, but during directly consecutive, successive periods of several months?