Unsurprisingly, Irahl is thankful when Robin lets the quiet settle. He can keep venting the overflow of anxiety and anger through barbed comments, but it isn't actually making him feel any better, and he isn't figuring anything out in the process. He knows very well that dealing with the surprise of seeing Robin again is going to be a whole thing, especially after experiencing months of freedom, but he is not about to slow down long enough to expend any mental or emotional labor right now.

If he reaches the surface alive, then he can consider having a real conversation. Until then, next to nothing is going distract him until he either makes it out or is taken down while trying.