There are no major differences between God-realization and Yoga. Both paths are the same and, on this path, one has to reach the path through the body. One differentiates saying that the mind and body are separate. Chitta (thought and counter thought), Buddhi (intellect) and Ahamkara (ego) are separate.
From this body to the truth, the technique which can illuminate the path is called Yoga. God himself is the source of the truth and energy. Therefore, all the techniques that are practiced in Yoga, enable one to seek the truth.
And in the last stage of Yoga, one attains spirituality and then there is no difference between spirituality and God. And in the process, one knows oneself and this is Yoga.
