not sure if i can wrap my brain around this notion of separating hallucination from psychedelics ... i'll spend an hour trawling for articles that might offer some perspective, even clarity ...
https://www.theguardian.com/science/2021/apr/28/non-hallucinogenic-psychedelics-scientists-close-in-on-compound https://www.nature.com/articles/s41586-020-3008-z https://en.wikipedia.org/wiki/Psychedelic_drug https://en.wikipedia.org/wiki/Hallucinogen https://www.technologynetworks.com/neuroscience/news/new-psychedelic-drug-could-treat-addiction-and-depression-without-hallucinations-344072 https://academic.oup.com/schizophreniabulletin/article/46/6/1396/5908041 https://goop.com/wellness/health/the-science-and-shamanism-of-psychedelics/ https://psychologycompass.com/psychedelics/ https://www.quantamagazine.org/a-math-theory-for-why-people-hallucinate-20180730/ https://ajp.psychiatryonline.org/doi/10.1176/appi.ajp.2019.19010035