i agree with your intj analysis, but the infj analysis is totally wrong. we do not and cannot compartmentalize anything, which is what makes it so fucking difficult to communicate our inner world, which is what we want to do MOST OF ALL.
altho this may have to do, also, with me being an enneagram 5w4 wing with an sx preference. revealing my inner world is what i feel compelled to do in life more than anything else, it is what i identify myself with, who i am, what i can do, how i can be seen, etc. vision is of such paramount importance, it is just never done, finished, completed. its articulation eludes me at all steps along the way. the desire to invent a new way of speaking.
we have spent so much time being disappointed that we could not communicate our holographs and technicolor images. we may, as a result, look especially recalcitrant and seriously walled off on the outside.