They were working with Western Digital, which like everyone else at the time was designing a 68000 based workstation, and conveniently enough, it was based on MIT's Nubus NuMachine: https://en.wikipedia.org/wiki/NuMachine

So they were doing all the normal infrastructure for a high end workstation, and LMI was designing a 4 board Lisp Machine CPU with a Nubus interface that would work in one of their machines, with or without the 68000 processor board running UNIX(TM).

People with a serious UNIX(TM) background were actually harder to find in the community at that time....