I wouldn’t say the same. Veneziano and Romano are like a
split from Rome’s personality. Rome is a conflation of both of them. If you
read the manga, you’ll notice that his expressions are very uncanny to the ones
his grandsons make.
Anyways, there are similar parallels between them that I
think would be worth exploring later.
Ex: This scene replicates Italy and Germany’s typical dynamic:
frantic Italian and no-nonsense German.

Source: Bamboo Thicket (Eng trans., Hetarchive, Oct 20th,
2013).