Go is in so far a good analogy in that two stones that are only connected diagonally, aren't really connected. You can cut through them. And you should. Just like there hunters.
A diagonal connection is a very thick connection. The major complaint about this connection is that it is not efficient; hearing someone say that the stones are not really connected is, once again, just hearing that you are 30-20k. I am being generous about 20k.