This pointed me to another story about reconciling the jagged boundary and 160+ Indian/Bangladesh enclaves along that border. The story notes: "The area contained the only third-order enclave in the entire world. It was literally an enclave surrounded by an enclave surrounded by an enclave surrounded by another state." Cool maps in the article:
https://www.washingtonpost.com/news/worldviews/wp/2016/05/06...