Yeah, so... when a Rook dies, he receives the full amount of gold when his tower kills an enemy during his time in Limbo. Unlike any other character where you receive absolutely nothing after being dead, even if the enemy dies the millisecond after your death.

I made a test with Col. Jessep, he was UB, I was Rook. These are screenshots from my perspective.

Well after my death (death animation was definitely over:)

This is when Jessep died to my towers (11 seconds after the first screenshot, where i was already long dead):

Not only does the text show, that I received Gold, you can also see by the Gold difference, that I actually received it.