As you can see, we have two triangles a bigger one in red and a smaller one in black. If we bounce off the smaller one than we were dealing with a smaller degree b wave and we should go to 8.5 if we bounce off the bigger triangle we are dealing with a larger degree b wave and we should expect 12ish.
Comment:
Keep in mind we are dealing with triangles and the e wave doesn't have to touch the bottom trendline, it can be truncated. In fact, we could be out of the triange rn