Thanks much Johan. Interesting you should mention Doyeweerd. I am a second generation Dutch man as my father immigrated in 1948 after the war. My family on both sides is thoroughly Frisian and "gereformerd." (Christian Reformed denomination). I attended Calvin College, now University for one year. So I have passing familiarity with Doyeweerd and a bit more of Abraham Kuyper, as I'm sure you know preceded and influenced Doyeweerd. But your comment has stirred my interest in looking more into what both these Dutch thinkers had to say. You may see in some of my posts the Kuyperian teaching (at least I credit him) that all truth is God's truth.
I also really like your idea of a lower dimension or a separate dimension, such as the idea of the fifth dimension that physicist Tim Anderson promotes on Medium. I hope to explore that idea as the dimension where all spiritual reality exists in a material form that we simply don't have the senses and equipment to observe.