There have been several.
Chin not being able to kill Costello.
Chin not listening when told Savino was a rat.
Genovese and the Appalachian meeting are a few of the well known examples.
Your first 2 are great examples, I don't know about number 3. I do think Gigante not stepping aside is another one, so the figures into several mistakes. I think Gigante in that bathrobe drew more attention than Gotti did.
