Overwhelm Physical Damage Reduction with Chaos Damage Conversion

I'm running Animate Weapon with a 4 White Socket Triad Grip. So all the physical damage from my minions should be converted to chaos.

If I use "Minion attacks overwhelm 20% of physical damage reduction" under "Minion Offense Mastery", does that overwhelm happen before the chaos conversion? Would I be wasting a skill point?

Thanks for any help or advice you can give.

if they dont deal any physical damage then there is no enemy physical damage reduction to be overwhelmed

Thanks for your reply. So if I'm understanding correctly this would be that their damage is never reflected either?

If they do not have a source of added elemental damage, then no, it will not be reflected.

Triad Grip only converts the physical damage to chaos, so other damage types could still be reflected in theory.