It seems absurd and counter-productive to attempt to argue or debate and yet not have common definitions on the topic. Furthermore, there is the inconsistency of arguing about legal matters - in Italy - where the posters (including especially me) don't have full knowledge of the law (the CP, Italian criminal code, which defines the legal elements of crimes and their punishments). Then one attempts to use the "common definition" which is really an abbreviated version of a generalized US or common law definition. Note that Italy has never had the common law, which derives from English and more generally British law.
What are the elements of the crime of burglary in Italy? There may be issues relating to whether or not something is stolen, which is what I infer from Hellmann's discussion of Raffaele's comment to the police that "there has been a break-in but nothing is missing" (or words to that effect).
ETA: And you, Grinder, are stating what the discussion was about. That is your opinion. I am entitled to my opinion and my statements.