Does wearing a Divine Helm actually affect its relative spirit?

Question

Divine Helms description states (this is the Rito one):

A helm worn by a warrior who protected the Rito in a time beyond memory. It's said to deepen the bond with the Rito when worn by a Hylian."

Fun fact, when you wear the helm the relative spirit wears the mask, too.

This is cool, but what does "deepen the bond" actually mean? Does this do anything or is it just aesthetic?

Answer 1

According to a Reddit user:

I did some rough testing, and wearing the divine helm appears to give the sage a ~50% damage boost in normal combat. It stacks with the other sage upgrade. It doesn't appear to have any effect on the sage ability.