"I am unsure as to why all the intelligence officials in the initial planning meetings for the mission felt that the only possible way to sabotage the pipeline would be at the short section directly bordering Russia, instead of the large section in more favorable waters."
I can think of one reason; to make it look more likely that Russia did it.
And why oh why would Norway help??? I'll give you 263 billion reasons...
https://www.bloomberg.com/news/articles/2023-01-16/norway-s-...
But no where doe the writer mention why Russia would do this to themselves.