Giorgio Pressburger

The report on the conference cited in earlier posts relates that, "for Giorgio Pressburger, ... his first language [Hungarian], the language of his childhood, for him can effect a stimulating linguistic enrichment for his writing in Italian." This is a promising avenue of investigation. How does the mother tongue enrich writing in a second language? I don't know Italian and cannot answer this question personally. I imagine that Italian literary critics have studied the language of Pressburger to find out how exactly it differs from the Italian used by writers born to the language. If they haven't yet, they should.