Create a sweep following 2 3D polylines

Greeting,

I would like to gather some ideas of how to complete this exercise. There are 2 3d polylines, consider one as a sweep path and another one as a reference for the sweep profile. There is a profile. I want to create a sweep that the a point follows 3d polyline A and another point B on 3D polyline B. In case there is a minor calculation difference/rounding, I plan to us A as a main sweep path and place point b on the line of the 3d polyline of A-B.

Do you have some ideas of how to achieve that? Thank you for all of your inputs in advance.

You could try Solid.BySweep2Rails, although I think you might have more success generating sections at an interval along the path and then lofting between them.

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Thank you. I believe it can certainly help.