Being egoless (with aid from tryptamines), ime, is a strong, brief feeling of this kind of ego rapture following this state of pure stillness, peace and silence. No words to really describe 'it.' No bliss.. but in itself felt similar to bliss. Two intertwined opposites co-existing together.

This 100%.

You'll know once you baseline and your jaw has dropped without your awareness that it did.. but your mind, heart and body feels expanded, alive and refreshed. You know undeniably that something powerful has passed, yet it remains a mystery. Anything before that, really, is like a profound dream. Some aspects can be surfaced but the experience is usually difficult to recall altogether. Practicing techniques (such as breathing) and having cues for when you want to breakthrough can be helpful, rewarding and possibly easier to navigate the state of being 'egoless.' Although, I think this can be experienced through both sober and psychoactive states.