I have found the producer / owner of the Communicator 1 and 2 (CD32 extension device) Seems his company, Eureka, was located like 5 minutes from where I live. (Beek, The Netherlands) He is still in the industry. Should I contact him for an interview? He might shed some light on those pieces of hardware. You can find him at:
http://nl.linkedin.com/in/frankhoen