Redesigning their interconnect stuff for both GPU and CPU then implementing and validating would have been a massive expense and would have added additional tim

Redesigning their interconnect stuff for both GPU and CPU then implementing and validating would have been a massive expense and would have added additional time to ship. With the company facing bankruptcy, I'd imagine that a small team hacking together the different GPU and CPU interconnects was cheaper and faster than designing a whole new interconnect and coherency then implementing and testing it everywhere.