I don't understand why anyone in their right mind would inform Bonanno about the Galante hit in advance?! Doesn't make sense. They sure as heck don't need his "okay"

So perhaps it was a warning not to get involved BUT again, suppose Old man Joe decides to tip off Galante. Having a serial killer like Galante retaliating isn't a great idea if one wants to live a long life

Now, I'd understand if they sent word to Joe AFTER the hit, as a warning not to interfere nor retaliate in anyway