Hi @Carrascado ,
Tha’s a good question; it comes down to what a change in direction is. This:

is not considered a change in direction. It obviously isn’t straight, though.It is a bit like when driving on a road that bends; you are not changing direction (a very incomplete analogy, I know…).
You really have to look at the model; when a loop goes up along the side of the face and then changes direction to go across the forehead, that is changing direction:

The blue line shows the side continuing and the green, the forehead continuing.
Not a perfect explanation, but I hope it helps a bit.