I've gotten in over my head over FED stuff plenty of times, I've only worked OBR. So I gotta ask: FED calls this different than OBR?
Rule 7.08(b) Comment: A runner who is adjudged to have hindered a fielder who is attempting to make a play on a batted ball is out whether it was intentional or not.
***If, however, the runner has contact with a legally occupied base when he hinders the fielder, he shall not be called out unless, in the umpire’s judgment, such hindrance, whether it occurs on fair or foul territory, is intentional... If the umpire declares the hindrance intentional, the following penalty shall
apply: With less than two out, the umpire shall declare both the runner and batter out. With two out, the umpire shall declare the batter out.