Glad to hear you have been able to experience that feeling Mildot. There is nothing more invigorating than feeling the horse suddenly come through, your are being carried along rather than having to push and fight, the horse seems to grow an inch at the wither, and the back is like sitting on a sponge. You feel like you can move any part of the horse, anywhere that you like. Once you can get a horse through, you know you're on your way and the work is correct.
This is the aim for my new boy, I don't think he's ever been ridden through, as he doesn't really understand how to swing over his back. So right now, it's just singling out parts of his body, loosening them up, getting him straight, fit, relaxed and even on both reins. Right now, I feel like I'm at the gym doing weight on my right side, he is SO **** blocked through that right hind. So travers, travers and a bit more travers!!!