Exposure: days. Basic competence: months of regular practice. Genuine skill: a year or more with feedback. Anyone selling mastery in a weekend is selling the first one and labelling it the third.
The syllabus is learnable quickly — that's why intensives exist. Skill is a different commodity: calibration, timing and live reading of people build through repetition with correction, like any performance discipline. Spaced practice over months outperforms compressed exposure reliably.
This is exactly why IONI runs 24 weeks: not because the content requires it, but because the capability does.