In the tradition of Pascal I will attempt to keep this short.
I have nothing but respect for both Rich Shay and Brian. I find them to be erudite and entertaining individuals.
I tuned into the stream of the challenge. Billy shennanigans aside,, during one match Brian was walking through the steps of a turn and Rich was disagreeing with him. It was very obvious that attempting to discuss the line with Brian, while reading the Twitch chat, while putting up with the myriad other distractions going on in the basement were plainly taxing Rich's thought process as he attempted to herd the radioactive cats.
That said- I was discomfitted by it because as a paper player I ran face first into the cognitive dissonance that says "you aren't allowed to do that."
Do I think Brian was navigating Rich through anything that Rich did not see? No, and in fact, I think the amount of input from Brian, the Twitch chat, plus the additional distraction of friends made for a much harder tournament for Rich than if Rich was just streaming in his office.
And no, I'm not weighing in on whether or not the rules or community guidelines should change. But it did feel wrong, even though I fully understand that it is not, due to years of "that's not how this works" from the non-digital format.
That said, I would also have no issue playing Rich if Brian were in the room kibbitzing/commenting/telling him to sac a thorn to ravager during the game- so there is that.