Complex sentence: However, Filippo Boria was also appointed to assist Gallia, which the corporate finance division of BNP Paribas in Italy would be reporting to Thierry Varène instead.
Split into simpler sentences: However, Filippo Boria was also appointed to assist Gallia. Moreover, the corporate finance division of BNP Paribas in Italy would be reporting to Thierry Varène instead.