After completing my Ph.D. on human intersentence inferencing, I did my first post-doc in AI in 1977. Within a couple of weeks of stressing over the difference between computational cognitive science

(which was me) and AI (which wasn't me), I concluded AI is not science, it's engineering. I've lived comfortably with that distinction ever since. And there is still a boatload of more work needed both in the science and the engineering. We have just begun to understand how the human brain computes (in detail), and how to build AGI. But have learned a ton since 1977 in both the science and the engineering.

AI is field (e.g., like electrical engineering for example). So is Computational Cognitive Neuroscience. They are different but feed each other. They will never fully converge. Anymore than electrical engineering and physics.