Haha i already knew these Bozzeto's vids, it's really good ^^ I must say that what he describes is similar to Poland ;) For my part, i think the sound of both languages are lilting...
Poles have more in common with northern Italians then with southern, same way how northern Italians have more in common with Poles then with southern Italians.
So, what is similar between Poles and Northern Italians? Well, they are both Catholics in great majority and they are Whites. That is first what coming to my mind but, one can contamplete more on topic.