This is purely a curiosity question, I just want to make sure I have terminology/concepts straight and be corrected if I don’t.
I was reading the USEF Dressage rulebook and starting thinking about extended walk vs. free walk. I was always told for free walk to let the horse chew the reins down but still stay connected. That sounds a lot like the extended walk though. So looking into it more, I THINK that the free walk is more letting the neck drop down and stretch, still accepting contact but with the nose out and not actually on the bit. And the extended walk they have to stay on the bit while still stretching. As far as overstep it sounds the same.
Is this correct? If so, I wonder if I have always been trying more for an extended walk than a free walk without even realizing it.