Very cool! Do they accept external contributions, e.g. from Norwegian citizens? Also, was there any thought given to "digital souvereignty" (wondering because the repos are hosted on a US service)?
I'm also surprised that you were able to (or expected to?) use your private GitHub account for your work.
Not sure how it is now, but when I worked there ~8 years ago we weren't really equipped to accept contributions. Both from a licensing perspective (CLA), but also that we had our own timelines, projects and prioritizations in the team. So most applications were open source more in the sense of source available. Some utils (like generators for Norwegian mock data, or libraries handling Norwegian addresses or whatever) that were actively used by other companies could get some proper contributions once in a while, though.