transverse couple / U / back of the diaphragm

The other day I when I was practicing I was feeling what i think i the back fo the diaphragm pretty clearly. When I was working on feeling the transverse couple I was slightly adjusting the tilt of my hips. When I would do this it felt like the transverse couple would pull on the back of the diaphragm. I didn't necessarily remember feeling a strip down the back but is this what the U should start to feel like, i.e. when we move one part of the U the other parts move as well?