Yes, it is the universal energy but it just doesn’t manifest so easily in a stone or a colour or a visualisation or a sound just like that.
All asanas, be it simple or the deep ones are made up of herald elements which are further divided into several sub-elements. All dimensions need to blend beautifully together for one pose to happen safely.
The Bandhas could not be learnt on their own. They need to be developed in an order which agrees well with their inherent nature. Doing classes and a practice consisting of incoherent elements won’t just do it.