I haven't done any psychedelics but I spent a lot of time meditating a few years back, and I experienced something like this on a smaller scale. It wasn't quite

I haven't done any psychedelics but I spent a lot of time meditating a few years back, and I experienced something like this on a smaller scale. It wasn't quite as profound as "thousands of years" or anything, more like, subjective hours over the course of 5 minutes.