How to modify the WINDMILL

I know that some use a rope or chain to turn the windmill into a closed-chain move,but the heavy(gray)
thera-band has some"give",which jacks up the neuro component to "11".
Observe the difference in the RIGHT ARM.
5 months after rotator cuff surgery,lovely Iris,who broke that arm as a kid,cannot fully extend(2nd part of video),,,but we add the connecting band,and it's a whole 'nother story..

check it: