I have internetz question. So I've just finished building a house in my backyard, and that house shares a lot of services, such as water and electricity. We are good friends with the tenants and want to share our internet service with them, but i want to have our own networks/wifi. How do I do that? I'm guessing I cant have my router simply have a direct connection to theirs, and each have our own networks, but same internet service? Or can I?