Ageless Radial Epihany and Alpha Slotting

Can alphas boost this? I know Alpha can boost every Destiny just about (IE any alpha with a Heal effects Rebirth, resistance effects barrier, defense effects barrier, etc).

Specifically, the alpha gives resistance to a lot of different debuff effects like Defense Debuff. So would having a defense alpha buff the debuff resistance? Has anyone tested this?

The debuff resistances say "Ignores buffs and enhancements", so no, Alpha will have no effect.

Hmm thats too bad, I wonder why they did that? Every other power is modified by alpha with the exception of recharge time.

Well, debuff resistances are generally (although not quite universally) not enhanceable.