Making tree branch style form with Pufferfish tweening?

I intend to make a branched form like this where two branches are coming out of a stem like this. I want to have the profile curves intact.

However, using pufferfish, I can only tween two enclosed curves. It doesn’t allow to branch two curves together with a third larger curve at the bottom.

PUFFERFISH_LOFTING.gh (6.6 KB)

What to do?

You could do one tween for each of the top curves with the bottom one respectively, loft them, cap them and do a boolean union, but something a bit more interesting would be to look into minimal surfaces like this How to make minimal surface like Daniel Piker? - #7 by Nick_Bruscia , there are countless tutorials on the internet for this kind of thing with grasshopper, so learning to properly use search engines for this purpose will help a lot in the future

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Thank you. I’ll try combining the lofted meshes and take a look at minimal surfaces as well.