I also live with ADHD. I think that's maybe why the dialogs at the beginning were so impenetrable to me without context. They are important and do a great job of illustrating what he's getting to, but for me it just felt like reading nonsense until I had some context about why they were exploring. I found myself in my initial readings not just bored but kind of offended by how wanky they were. Once I got a better understanding of what he was trying to say, I could see the weave of the thing and even have a few laughs along the way.
I wonder if you would like McGilchrist's book then. It's full of associations and drawing lines between seemingly unrelated things, and with sentences containing more than seven comma's not being uncommon.