In the article, they mention that these patients can understand verbal commands being given to them. It is also non-trivial to communicate with apes, as they ha

In the article, they mention that these patients can understand verbal commands being given to them. It is also non-trivial to communicate with apes, as they have successfully demonstrated on neuralink. Even using the basics of left arm and right arm broadly you can establish communication by using dichotomous questioning.