I think neil was doing everything he could to play referee between castellano and gotti/angelo, but if it came down to that castellano ordered their killings i belive neil and his old school thinking that "the boss is the boss is the boss" would be go along with it rather then go against paul and start a war. Just my opinion.

"Let me tell you something. There's no nobility in poverty. I've been a poor man, and I've been a rich man. And I choose rich every fucking time."

-Jordan Belfort