I'm interested in seeing how the dualist/monist debates. If one thinks that the consciousness is separate from the body, how does that position stay defensible

I'm interested in seeing how the dualist/monist debates. If one thinks that the consciousness is separate from the body, how does that position stay defensible if we are able to create something which is, for all intensive purposes (that is to say, it acts indistinguishably from a conscious being), conscious? I imagine that someone would argue that you create a soul somewhere along the process of creating such an object/being, I think it would be interesting to see where people draw that line.