I connect my bots as friends one time to jump acts. They immediately drop friends (and just use recently played to connect to each other from then out.)
I have been funneling items and gold from bots to mains (paypal only on main, not bots) since D3 came out. Main still not banned. Bots have never used RMAH but use the GAH all day. Gold is traded to main. Items worth selling on RMAH are dropped on ground and picked up by main. Everything else the bots sell on their GAH.
It doesnt matter how you funnel the gold/items, its trackable. If they wanted to ban you, they would. They just dont have time to check thousands and thousands of bot accounts by hand to link them and honestly they dont have anything to gain from doing it. We make them a killing.