thanks for the clarification.
It seems that 101 parks of 200m2 would also act like a single >2ha large green space? Maybe they would but, as you say, the science is still developing, and its not a helpful feature with this uncertainty. Perhaps a quick fix for the model is to allow users to enable this effect when they are specifically investigating large spaces? And disable it at other times. It’s also misleading that the user guide refers to ‘large green spaces’. It does not say contiguous but there is definately an implication.
I am too far down the line with my work (lots of small green spaces) to go back and unpick the consequence of this but it will certainly have a place in my discussion (its only a masters dissertation, not a phd!)