Obviously they went all the way back to the Mangano days. Like you said they had respect for eachother but were polar opposite. Paul as we know was into white collar crimes while Neil was your typical blue collar street thug As for not getting along Ive heard about some arguments. I read one time things got a little heated when Neil felt Paul was talking shit to guys who respected Neil and Neil finally said "Fuck this job and break me down to a soldier". Obviously we know about the whole Angelo tapes drama. Neil said Paul would constantly bring it up.