Connect two spline at runtime

[Doomchecker]

Hi there,

I want to create a procedural world where splines have to connect at runtime.

I think I am on the right track but I can't get the connection finalized meaning the same process when clicking in the Inspector: Connection - Control Point Options - Synchronization Presets -  "Position and Rotation" after which the connection will be blended together.

Code:

var lastVisibleControlPoint = lastSplineController.Spline.LastVisibleControlPoint;
            var firstVisibleControlPoint = firstSplineController.Spline.FirstVisibleControlPoint;
           
            var connection = CurvyConnection.Create(lastVisibleControlPoint, firstVisibleControlPoint);
            connection.SetSynchronisationPositionAndRotation(lastVisibleControlPoint.transform.position, lastVisibleControlPoint.transform.rotation);

What am I missing here?

Thanks a lot for helping out!