I think you are confusing method of delivery.
“Inhalation
A standard dose for vaporized DMT is 15–60 mg. In general, this is inhaled in a few successive breaths. The effects last for a short period of time, usually 5 to 15 minutes, dependent on the dose. The onset after inhalation is very fast (less than 45 seconds) and peak effects are reached within a minute. In the 1960s, DMT was known as a “businessman’s trip” in the US because of the relatively short duration (and rapid onset) of action when inhaled.[99]”
Duration of effect does not appear long enough.
too slow, too fast, never just right for you and your theories. whatever.