[lagrade]

Yes, I read them and no, I don’t think there is insufficient evidence advocating for the concept of gandhabba. There are plenty of evidence from the Tipitaka itself (like Buddha’s travel to higher realms, for example), reinforced by evidences from NDEs, OBEs, rebirth evidence, etc. that legitimize the concept of mental body. But I don’t know if I can say the same about the idea of pure octads, even though I find it convincing to think that the mental body would have a trace of materiality to it. Buddha said it would ignoble to teach something that isn’t part of the Dhamma and the fact that this doesn’t appear in the Tipitaka seemed like a red flag to me. But I haven’t looked too deeply into the Abhidhamma Pitaka so I could be wrong about this point.