Oh, so it happwnwd bwfore the point of divergence. That's a pity but understandable. What happened to Venice there effectively destroyed much of their culture. After that they are a mere shadow of what they once was and resulted in Venice's complete Italization. No, not writing in tilted letters. They went from staunchly defending their Venetian identity to the largest supporters of the Italian unification. Having pillaged twice and robbed of most your valuables and humiliated to the ground then basically oppressed for decades does that for you. Yeah, in that case Venice is not viable.

Also sorry for the typos. I am dead tired from work and just took the bus home.