One thing that I learned as Kohai was that my
favorite partners were "Mute Sempai". When i first started in 1991, there was very little talk in our dojo. In fact, if I asked even some of the shodans other than our sensei a question about technique their usual reply was to look me calmly in the eye and wait to do the exercise again. I quickly realized that the best way to learn was to pay attention to both of our bodies during ukemi.
Now I'm a "Mute Sempai" whenever I have the restaint. It sometimes confuses and frustrates my Kohai when I refuse to verbally reply to their questions the first two times or so. I always hear them and slow my nage actions down and exaggerate their troubled part. When taking ukemi, I try to blend into the ruff spots to smooth them out.
What more should be said than, "Feel this here."? How much talk goes on in your training?