So it boils down to this. You have Item A that gives you a Profane Bonus to AC, You have Item B that gives you a Profane Bonus to AC. It does not matter whether A is a ring, B is a broom. It also does not matter if A is a divine blessing given to the character and B is a ring you just looted off your buddy. No matter what forms A and B take, they will not stack.
Thanks for info as your second paragraph really helped out. I think I am now on the same page as you and in agreement. Where I had the issues is in how the "software" handles the different bonuses. I should have come at this purely from the game logic angle.
I see now how that got me confused. The profane bonus while on the armor is "pushed" to the hero and that is where the total value needs to be applied. Regardless if its armor or a broom. ;)