1. A person who has been successively or alternately subject to the legislation of two or more Member States, of which at least one is not a type A legislation, shall be entitled to benefits under Chapter 5, which shall apply mutatis mutandis taking into account paragraph 3.
2.
However, if the person concerned has been previously subject to a type B legislation and suffers incapacity for work leading to invalidity while subject to a type A legislation, he/she shall receive benefits in accordance with Article 44, provided that:
—
he satisfies the conditions of that legislation exclusively or of others of the same type, taking into account, where appropriate, Article 45, but without having recourse to periods of insurance or residence completed under a type B legislation,
and
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he does not assert any claims to old-age benefits, taking into account Article 50(1).
3. A decision taken by an institution of a Member State concerning the degree of invalidity of a claimant shall be binding on the institution of any other Member State concerned, provided that the concordance between the legislation of these Member States on conditions relating to the degree of invalidity is acknowledged in Annex VII.