I would say, most of the time, if the game-have is not a jerk, they will be fine with you saying, “Can you slow down?” or asking a question. But like the main comment on this thread said, maybe I just have great game-having friends and acquaintances.

Coincidentally, I saw a similar comment where the the new player was the antagonist, saying things like, “That’s too complicated!” to a simple rule. I tried to find it, but I had no luck.