iron will and pillar of the caged god question

i looked around online doing several google searches and sifting through several forum threads, but i could never find a definitive answer, so hopefully someone here knows.

does the 16% increased physical attack damage from strength from "pillar of the caged god" unique staff, increase the amount of damage bonus supplied from the "iron will" support gem?

so instead of getting 2% spell damage for every 10 str would you instead get 18% increased spell damage?

There's zero relation between the two. Pillar enhances the damage only of the current weapon, it doesn't affect spell damage.

thank you