I think that this idea is a bit ridiculous but my friend insists that: because of ambiguity in the rules, it is perfectly legitimate to build roads 'through' settlements. In case 'through' is unclear, let me explain through an example:
So, say that we have our hexagonal board piece. Now, we have two settlements, one towards the top, another towards the bottom. Now, the bottom settlement wants to build roads, so it starts building around this same hexagon. Now, my question: can you build a road that 'passes through' the other settlement to complete the loop?
Also, can you please reference the language in the rules? (My friend is extremely stubborn)
I am trying to get a visual example, sadly I am nowhere near a board. I'll get the picture ASAP. Thanks in advance.