No problem, when trying to escape, the goal is to fill an escape gate. If they never block you, you have an easy escape. once they block you, you can't fill that gate, until they stop blocking it, so you have to move and try to go out a different gate. If they hold you there long enough by blocking you, they can advance to the next stage of the submission and the gates are reset. Different factors, determine how quickly you get an advance prompt, and how many prompts are needed to finish the submission. For anyone struggling with the submission game on offense or defense, I hope this explanation helped.