RAF exp question

Blizz's FAQ states:

In order to receive triple experience, you must be partied with a character on a linked account and within 100 yards of one another. With this, both characters (veteran and recruit) must be present for each kill and quest completion.
Also, should monsters or quests be marked as low level or listed as gray in difficulty for either character, triple experience will not apply.


Does that mean that if I have TWO accounts that are boosting, I won't get the triple EXP?
An example, I have level 90 boosting a level 15 in dungeon. Level 15 is the RAF account.


Will I receive the EXP?

Just to clear up some terminology, if you have one 90 and one 15, then ONE account is boosting (the level 90). In this scenario you will not get the RAF bonus. If only playing two accounts, it is not possible to boost as they must be similar level. You need at least three accounts to boost and get the RAF bonus (e.g. One 90 and two level 15s).

So, I would need a 3rd account? How would/should I set the RAF up, then?

A > b > c