This 1982 profile of Acorn’s Chris Curry mentions Gluon as a forthcoming 32016 (or 16032) product. As we now know, Acorn never shipped a product called Gluon, or a second processor made as a peripheral for other 8 bit micros. And the Unix for Acorn’s machine (Xenix) didn’t arrive either - PANOS was shipped instead. But the ns32k as a second processor for the Beeb was shipped, and the Acorn Cambridge Workstation integrated it (although I think it sold very poorly.)
Here’s PANOS on a second processor:
Here’s an Acorn Cambridge Workstation (inside and out):
Here’s Chris’ Acorns on the ACW.