Nobody knows how long any border is if it adheres to any natural boundaries. The only borders we know precisely are post-colonial perfectly straight ones.
I've tried, but chatGPT won't give me an answer. So far, my personal record is Serbia - Iraq. If you find 2 countries that are further apart, yet chatGPT will give you a length of the border, feel free to share a screenshot!
So I apparently have too much free time and wanted to check. So I asked ChatGPT how long the border was exactly, and it could only get an approximate guess, and it had to search using Bing to confirm.
That's a number I never got. I got either 700 something km or 1000 something. It's only sometimes that chatGPT realizes that there are Austria and Switzerland in between and there is no direct border
The length of the German-Italian border depends on how you define the border. Here are two ways to consider it:
Total land border: This includes the main border between the two countries, as well as the borders of enclaves and exclaves. This length is approximately 811 kilometers (504 miles).
Land border excluding exclaves and enclaves: This only considers the main border between the two countries, neglecting the complicated enclaves and exclaves within each country's territory. This length is approximately 756 kilometers (470 miles).
It's important to note that the presence of exclaves and enclaves creates some interesting situations where the border crosses back and forth within the same territory. Therefore, the definition of "border" can influence the total length reported.
It’s honestly a gamble based on my experience. Instructions that I’ve given ChatGPT have worked for a while, only to be mysteriously abandoned for no valid reason. Telling AI not to hallucinate is apparently common practice from the research I’ve done.