Extracting a From-Z and a To-Z for a road network from a DEM

[JWest1]

Using ArcGIS Pro 2.9.5.

I have a DEM and road polylines that I need to extract the From and To-Z values. I have extracted points from the segment ends and imported the Z values into those points but need to be able to add those to the polylines in their appropriate place. Unfortunately, unless I manually look at each line I do not have any way to differentiate the attribute of a from or to point value on those lines.

Is there a tool or workflow that can:

1. Create a From and To field in a point feature class to extract a Z value from a DEM or other elevation data
2. Append or join the From and To Z value from the point feature into a polyline feature
3. Automate this process?