Also, about life shot. I'm assuming it's still used just not as telegraphed, similarly to how The World's timestop was originally portrayed. That's probably why he could combo people more
Well you could here the life shots and he used the berserk senses attack on Buccelati who he had no quarrels with. Cioccolata was a person Giorno despised so why would he not. I can’t give you undeniable proof, but it is the most likely way he went about it.