Occult Equilibrium Node - Adrenaline regen

Macheneso

So I’m here in Cav monthly quest with my 6s Claire Voyant and I notice that when using Sp2 in blood curse she regen therefore Power drains the opponent and gains a fury from Siphoning Strength node.
But when she regen back the Life from the block damage via Adrenaline that doesn’t apply.
Isn’t that a “Regeneration Effect” is is just coded differently?

DarkEternity

Adrenaline isn’t considered regen by the game. It is unaffected by any regen modifiers like recovery, heal block, spectre, etc