Right - LLMs would be a bit silly for these cases. Both overkill and underkill. Current approach for length matching is throw it off to a domain specific solver. Example test-circuit:
https://x.com/DuncanHaldane/status/1803210498009342191How exact is exactly the same time? Current solver matches to under 10fs, and I think at that level you'd have to fab it to see how close you get with fiber weave skew and all that.
Do you have a test case for a schematic design task?