They share no technique but are both individually scored performance sports judged without a direct opponent, a pairing that could be revisited later.
Gymnastics and Strength Sports groups gymnastics and weightlifting together as a contestable structural call rather than a clean family: the two disciplines share no technique, but each was otherwise a singleton category, and both are individual sports judged on a single measured or scored physical performance rather than on defeating an opponent directly, distinguishing them from Combat Sports and every team category in this tree. A future structure pass with more live sports in either discipline could reconsider splitting this pairing.