Divide a interpolate curve with an arc

how I can divide this interpolate curve with this arc? In the end I want to obtain a continuous curve to loft.

Something like this:

will need a file to test

Try with sub curve

split curve.gh (12.7 KB)


Thank you !
I was trying to loft using those curves (in rhino there is no problem), but in gh it doesn’t work, do you have any idea why?

Can you upload your files?
It makes it easier to see what you have done as well as work with the same dataset.

i can’t know without file