I don’t know where these distance numbers come from. Being separate play areas is what makes separate play equipment eligible. There is no distance given in the clarification:
The clarification also does not give instructions on which rejection to use. I think that “duplicate” works, but that “not distinct” would be suitable here if one just can’t bring oneself to use “duplicate” in this situation. I would love to see staff comment on this, but it doesn’t seem like the kind of issue they usually engage in.