It looks like the following actionc can lead to Auriel having two active crowns, and both of them seem to contribute to her energy.
- Put the crown on any character (Kael’thas in my case)
- Put the crown on Dva in the human form
- Dva summons her mech
- The crown appears on both Dva mech and KT
Casting a crown at any other character that doesn’t have it afterwrds removes both of these crowns, though.
I’d post a screenshot but the links are not allowed for me.