Telekinetic projectile says that it deals only 1d6 and nothing else, doesn't matter what you throw. Grenades debate on impact, but would deal damage when detonated. Does that mean telekinetic projectile cancels out the grenade explosion? Doesn't it just hit like a potentially explosive potato that sits at their feat? Or does the impact do telekinetic projectile's 1d6 and then the grenade itself detonated from that impact and do its damage/effect?