Summon Defiler and debuffs

Hi

How do the "shared damage" effect of Summon Defiler interact with debuffs (like Amplify Damage or Conviction)?

Is it applied twice in practice?
(once when the "original monster" takes damage from you, and a second time when the other monster takes the shared damage?

Example:
two monsters with base 0% Physical Resist (so -100% with Amplify Damage), and Defiler bounds both (let's assume the shared damage is 50% to make things easy)

- I deal 1000 physical dmg to the first.
- It takes 2000 (because of the -100% Physical Resist)
- so 1000 (50%) would be dealt/shared with the other bounded monster.
- But as the second monster have -100% Physical Resist too, it will take 2000 instead of 1000
(So, from the perspective of the second monster, Amplify Damage was applied twice to the damage dealt to it, as without Amplify Damage it would take 500 dmg instead of 2000)



Is my reasoning/calculation correct?