Originally Posted by
CPH-Flyer
There is no clear definition of how long you have to stay. Basically anything beyond airside transit would probably count.
Actually on this point i also asked both the consulate and the Covid hotline if they could point me to a definition and they couldn't. The general advice was as you mention above and "be prepared to explain yourself upon arrival", but as i noted before, when I went through the process they didn't ask me anything on this and just took my word for it that I was coming from an unrestricted zone.