Thanks for asking this, I am also new to BIAB and RB and from a newbie perspective is it VERY confusing, there seems to be a lot of overlap between the 2 products and the line is blurred where one product ends and the next begins, the recommended strategies for getting them to work together, which is better to use based on what you are trying to accomplish, etc. This topic alone that addresses the difference between the 2 products could be its own white paper which I wish PG would publish.