But if lets say im in a internal/ flared position, the upper arm would be away from the body therefore the longhead wouldnt be as shortened as it would be if my arm was tighter and closer to the body. (Scaps would be pulled back as much i could pull them back)
Is that right, or it doesnt actually matter?
I would argue your long head has better leverage to wrap around the shoulder and therefore have better alignment when your elbows are flared, so you re good.