I was looking for the playtest pdf’s on paizo forums and saw it might be some hours but while doing so I encountered someone questioning the rituals which sorta sent me down a rabbit hole on aon for create demiplane and it mentions them being create in the astral or etheral plane. My question is does that mean one can pass the boarders of the plane and be on the astral/etheral plane and can anyone on that plane accidentally find your plane. I assume no and you have to have the key and the spell but the part saying its located in the planes confuses me. I thought it was more like an overlapping plane like first world.