Possibly....although there were a fair share of killers in the Gotti crew - the Carneglias, Willie Boy, Gravano etc and you'd have to work on the assumption that the demeo crew would risk an unsanctioned hit on Gotti just to avenge demeo's murder.
I reckon it was more of a hidden lack of willingness to do Castellano any favours - if Gotti could get out of any situation which might help Castellano, he would've at that point. Remember, Castellano wanted Demeo dead incase he turned infomant, so what's Gotti to gain in carrying out the hit if he could avoid it?
Not trying to souund like a know it all.. because im not but Gravano wasnt in gotti's crew. Sammy was in toddo aurello's crew.
