When practicing Serrada basic fundamental counter system,
imagine you have no space to the left or right of you, so
you do controlled stepping.

When practicing Largo Mano (Long Range) you imagine that
there IS space to move around. Largo is when you cannot reach
him with your LEFT HAND. Then you meet his oncoming strike,
or go in a trajectory against it (striking his hand/wrist),
or smother him and take all strikes to the ground.

In actual fight, you could begin with Largo and end up
in Serrada range.

But as a practice in the class, keep them separate
as arts so you master the concepts of each.