I remember I was watching some grappling at a judo tourney once. One of the grapplers had a coach shouting the entire time "lift his leg..." "Shrimp out!" "Get out of half-guard!" The coach literally didn't stop talking the entire time. Our sensei looked over annoyed and said to me "what's the point of letting them fight if he's gonna play by play every move?" This is true, I even see it during professional matches. They'll be 5 guy in the corner screaming different things. A few comments here and there help when you're losing, but the entire time? Between all of the noise, exhaustion, getting punched, choked, etc. I can't imagine anyone can focus on what's being said to them, let alone by a multiple voices.