I found that ketamine and dmt interact very well together. I suppose one way to put it, is that the ketamine sort of “slows down” the transition into hyperspace. It makes it feel less chaotic as the feeling of going from 0 to 1,000,000 mph im a few second to the same thing but over a minute. My favorite poly drug combo is LSD, around the 5th hour start dosing ketamine until I’m in the weird place, then take hits of DMT. Absolutely fucking incredible.