Arachyr 4pc + Spider Queen's Grasp

I can only visually see the spider webs from the dagger and the spider “trail” the spider queen from the 4pc set is supposed to leave is invisible, or I’m taking reduced damage while on the webs from the dagger. If they’re supposed to be in the same spot, it’d be helpful if this was indicated. Also, I seem to get no damage reduction from the 4pc unless I’ve actively cast the corpse spiders skill, which is certainly not intended based on the wording of the 4pc.

All testing done with Veil