They argue that the buildings had already been used by the Belgian Post Office before the incorporation of DPLP in 1992 (i.e. they had been already used by the State agency).
Nende sõnul olid kõnealused hooned Belgia postiteenistuse kasutuses juba enne, kui sellest sai 1992. aastal DPLP (ning neid kasutas seega juba postiamet).