From page 1, regarding Leonetti and Chickie Narducci, they did not have a relationship. Phil was just an associate, then a soldier under his uncle whereas Chickie was already an established capo

The reason they don’t like each other is because Phil mouthed off to him at the wake (Chicken man) when Pete Casella and Narducci asked Nick to attend a meeting

And Phil spoke up saying my uncle will only go IF you leave one of their guys here (Johnny) who was a relative of the other side.

Narducci found it disrespectful and didn’t like Leonetti based on that. Plus obviously being his uncle’s guy, his uncle would always say they’re no good ie Casella sindone and Chickie