OK, I think it is like this the Ukrainian army is locked and tied-up in the East, the absence of big battles is because the Russians aren't pushing to break thru, they are just pushing enough to lock the Ukrainians in and keep them that way, so they use their man advantage not by having 2 units attack 1, but by having 1 unit lock 1, and then move the +1 unit to some other place ...
-- underground experts united https://dataswamp.org/~incal
