Yogi cannot be Gnani

Yogi shuts his eyes the world confronts him and then has the temerity to declare that it knows the world to be Brahman! Because he has not inquired into it, he knows nothing.

Yoga helps the yogi by giving him the feeling that the world is not worth bothering about, it detaches him from world; it makes him treat the world as a dream. It does the same to his ego to some extent because he becomes indifferent to what happens to him. But this is only feeling, he feels these things only but does not know that the world is mere mirage. Such knowledge can come only after soul-centric reasoning and in no other way.

That is why Yogi cannot be Gnani. It is the difference between feeling and knowledge. Feeling and emotions  are part of the illusion. yogi thinks the self is within his body thus he limits the self to the body and drops the world accepting as reality. Thus yogic samadhi is mere hallucination   -FORMLESS PATH