Forgive me, my friend, but you do not know what you're saying. Unfortunately my bad English language does not allow me to explain what the problem is. However, if you met a situation that the room with a fixed host people could not see each other, you are unique in the world.
I propose to end this discussion and thank you for your understanding for my knowledge of the language. I was trying to share my knowledge and experience, but you will do as you wish. See you on the track and I wish we all always see each other.