Sanhedrin - Introduction

I want to post some quick thoughts as I try to review Sanhedrin with Daf Yomi. First is from Tosefes Bracha on the origin and meaning of Sanhedrin. His own explanation and then a Tashbatz at the end.

Then, The Great Sanhedrin;: A study of the origin, development, composition, and functions of the Bet Din ha-Gadol during the Second Jewish Commonwealth1953 by Sidney B Hoenig this book from the 1950s says something like: "Dr. Hoenig, going one step further, believes that there were actually three courts: the great court of rabbis, which dealt with the Law, its development and decisions; the court of priests, which dealt with Temple ritual; and a governing council, which dealt with general administrative and civil matters." I am not supporting or agreeing with any of his arguments, but they are worth noting.