And how would you do that? Show certain moves and point your thumb up for ok, down for not ok? Then sorry, you're still using a language, just without using words.
It doesn't seem so far-fetched to believe somebody could learn chess just by watching others play it, no language needed at all (except perhaps reading the body language of being glad to win).
But I imagine LLMs will soon have the ability to turn image sequences into information that can be interpreted and ingested much the same way as they can text, and thus "learn" how to play chess just from analyzing videos of actual games being played.