[While he doesn't say it, Donnie's kind of glad Accelerator's there, responding in what seems to be typical of the esper by now. An additional factor, a glaringly obvious shift in their usual dynamic that he hopes can keep them grounded, so to speak. ]

I know, I know...

[He is hanging onto his own nerves by a thread and Leo's being on edge hasn't helped him. His thoughts are running circles because of that, but at least Leo's kind of pulling himself together.

It's enough. It has to be.

Donnie's tension breaks with a careful smirk as he shifts his grip to properly return the fistbump offered, nodding.]

Right, let me just...see what we've got here.

[He reaches up to shift his goggles down, nearly breathing out a laugh.]

-hah! I was right! [He never doubted this for a second, what are you talking about?] This... is some sort of... super convincing illusion. But the room is finite in its dimensions- we haven't gone anywhere, somehow it's masked. We just have to keep going straight ahead.

[Simple...right? Never mind that somehow this illusion has pulled something right out of his brother's head...!]