Mesh/polysurface to single surface

I am working on a project using the “robots” plugging for GH. I have managed to create a script using a simple cylinder surface but now I want to “print” a more complex t-shirt shape that I have referenced as polysurface (or mesh) in rhino. However, my GH script requires a single surface.
I have been trying different ways of merging the poly surface (merge srf, loft, sweep, contour etc) without any success.
I am GH newbie so would be very happy for any advice/strategy on how to think about this problem.

Here is the files: robots_GH - Google Drive

thank you

Not possible.

yea it feels like their should be a way to work around it but cant really figure it out :laughing:

but it can be turned into a Brep