I realize AFCI protection is required at all bedroom outlets including the smoke but I have a situation where the whole bedroom is on one circuit, then there is a two gang box by the patio door. In this two gang box there is a three way for the bedroom light and a four way which switches the patio lighting which is on a different circuit. Would this be a violation? Should the patio circuit now also be AFCI protected because this one switch's wiring enters the bedroom 2 gang?

By the way didn't there used to be an AFCI forum?