No, it’s a serious question as topologically they do border each other. So, are they arguing being able to sail from A to B is enough or must they be sailing across freshwater etc. Borders do get drawn across bodies of water all the time, but deciding if France and the UK border each other but Spain and Italy don’t is arbitrary.
Spain is the closest country to some parts of Italy. So, they limit each others economic exclusion zones. That said it’s close to 400 miles between them across open ocean. Further economic exclusion zones are a fairly recent and thus an arbitrary thing.