Quote Originally Posted by demisehi View Post
I have 1 account with mains. I then sent a RAF invite to another email I have, and linked them. I purchased Battlechest and Lich King and upgraded RAF account. Can I just run the other toon with my high level account through mass instances and still gain the 300% xp boost?
No. As per the Blizzard FAQ you need to be within 4 levels of each other to receive the benefits.