Nelson, breaking the line, and crossing the T

If crossing the T was so effective, how did Nelson succeed by breaking the enemy line?

Breaking the line creates two local enfilading positions at the breach and disrupts the enemy formation, provided the attacking columns keep advancing.

Crossing the T lets one force concentrate fire against the head of an opposing line. Breaking that line can create two local enfilading positions, against the sterns of ships ahead of the breach and the bows of ships behind it. The attacking column initially exposes its own head to enemy fire. Continuing forward while firing avoids the bunching that could result from trying to turn away.