I agree to a certain extent but i think we all know if Galante DID meet with Joe, it wasn't a social call I'm sure they did more then have an espresso. So if Galante was giving Bonanno a sorta tribute, maybe it was just to inform(not necessarily consult) him that "Lilo is out and you won't be getting those envelopes anymore" (possible?) or just see why they met. If they found out, it was just a social call, no harm/no foul, Galante is still getting whacked. (and Bonanno being uninterested in NY matters, by remaining nonchalant, that's almost like an approval)

at the end of the day no matter what, Luciano was always Luciano, even in his last days in Italy. Same goes for Bonanno, the power may not have been there but the "show" of respect was likely still there.