Knight's Vow Questions

Ok so had a few questions about knights Vow that I haven't been able to test and no one has clarified on the wiki yet. Most all of these relate to the SOURCE of the damage and healing from this item and what that means for other items. If anyone knows the answers to these I would be very grateful.

Questions from the tank's side: ---Does your partner taking damage deactivate Warmogs and other out of combat healing? ---Does it register partner damage taken from enemy champions and proc eternity from the Catalyst of Aeons items, or does the damage source count as something else? ---Is the healing from partner damage count DoT's/pets/misc. like the gunblade, or does it only count damage directly dealt from your partner? ---Is there a minimum health cap like Bond of Stone or can it kill you from intercepting damage? ---Who does the healing source from for purposes of Forbidden Idol items and Windspeaker's Blessing? Will I get a better heal for having these or does my ally have to have them since it's their damage that's causing the heal?