Label driveway slopes in cross sections (XS)

I have similar task, with no idea ho to fix it for now. In the intersection area, or close to the slip roads nose I am using terrain + surface templates. XS will not recognize these areas as segments - rather two independent points. I tried to configure XS annotation definition to annotate slope between such points but with no success. I gues it is because XS Text Favourite that labels slopes works on segments.

I wonder if we can define segments in other way than by templates, eg point names or feature definitions. Then both cases would be easly solved: my with intersections and yours with driveways.

I hope someone can help with this.

Thanks,

Adam