I go along with Apple here. Funnucci's murder was the beginning of Vito's reign as Don. Good point too with his demeanor change! At the time of Signor Roberto's visit, Vito had a new sense of confidence it seemed.
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK
At the time of Signor Roberto's visit, Vito had a new sense of confidence it seemed.