Some questions about act 4 of the archon quest I'm hoping somebody can clarify/give thought on.

Alright so here they go:

1. How was Rerir able to create a chess set within Nefer's chess set? And how did he get physically in there to begin with? Was he disguised as Ashru the whole time when they came back to the Curatorium that second time?

2. What was that device kaveh made that they fought inside?

3. When Durin just outta nowhere "linked everybody's minds with pyro", what was that?? Has there ever been a case of pyro doing that before or it is just a sort of thing where we are supposed to nod and say "ah yes yes I see"

Lastly 4. How was Dainsleif able to hold open the moongate? With what power? My understanding was that Columbina was opening it with power from the frost moon. That felt rather sudden.

I think it would've been awesome if Dain fought alongside Columbina in the cutscene and then when they when they threw him in the portal, it was a surprise Arlecchino using her moon marrow to hold it open and Rerir got one last look at the crimson eyes he used to kill.