Forging, you will hear it, the hind hoof runs into the sole of the front hoof and it is sort of a muted click on a bare-foot horse. On a shod horse it rings out loud and clear.
My first horse, otherwise perfect for me, forged at anything faster than his “normal” walk, click, click, click every single step of the way when I asked him to extend his stride. The same thing happened at the trot also. My first horse did not develop a good extended walk though his extended trot ended up being very, very good, but by then he was strong enough to move his front foot out of the way of the advancing hind hoof at the trot.