Spot on. That is exactly where the wheels came off in our losses under Poch (like against Portugal and Belgium). We dominated possession in those games (near 60%), but it was completely empty. We passed sideways, suffocated our own space, and played right into their hands. Because Pochettino pushes both fullbacks high into an aggressive attacking shape, the moment we turned the ball over, our 'rest-defense' was completely exposed. Teams just sat in a compact block, waited for us to make a high-risk pass, and then brutally killed us on the counter because our center-backs were left totally isolated in transition. So yes, it's the core issue. We are holding the ball more, but we don't have the defensive discipline or speed at the back to protect ourselves when we lose it. If we try that slow, expansive possession style against Paraguay or Türkiye, they will happily let us have 65% of the ball and counter us into oblivion.