What is Mind? What is Matter? Is idealism vs. materialism a confusion? First of all i don´t mean no disrespect. And also sorry for my English, it is not my native language.
What i have to say is: what are these questions of mind and matter mingled with idealism and materialism?
Matter is being purchased by physics, well advanced and on tracks. Mind is a definition still very unclear and unknown (I believe that psychology is a form of witchcraft, we understand almost nothing of the brain, much lesser that we understand matter - and this is fine, brain is a lot of matter interacting, so first we need to understand basic matter).
On the other hand, idealism is a concept, a construction of the so called mind. Also as materialism. They are just consensual taxonomy.
Maybe all of this is correlated, but at this point of humanity, how in the world can you demonstrate it?
Just imagine how Kierkegaard perceived gravity or aspirin.
Maybe it is me that I´m limited, but I can even start to make sense of your questions....