Times, Sat 4 Mar 2023: Travel section wrote:
Q: I have an Irish passport and my wife a British one. Since Brexit, I have been accompanying her through the British passport channels. Recently we both waited some time in the “Brit” queue at Zurich airport and when I got to border control I explained I was in that queue to keep my wife company. The border control officer said that as an EU national I had the right to take my wife though the EU channel regardless of the fact that she didn’t have an EU passport. Clearly we’d need to go to the counter rather than through automatic barriers, but I hadn’t heard that before and have never seen advice to that effect. Could you confirm if that is the case?
Kevin White
A: It’s true that you can go through the EU channel with your wife and that her travel with you doesn’t count towards her “90 in 180 days” limit for stays in Schengen countries in Europe. I’ve found it impossible to get granular detail on this from an official EU source but page 20 of the Practical Handbook for Border Guards is useful (search on ec.europa.eu) and if you need further reassurance, email the EU Contact Centre (european-union.europa.eu/contact-eu); you should get a response confirming the rules within three working days.
https://www.thetimes.co.uk/article/is-my-british-wife-treated-as-an-eu-citizen-while-travelling-because-i-have-an-irish-passport-skvf3lq9b (paywall)
http://archive.today/2023.03.04-054948/https://www.thetimes.co.uk/article/is-my-british-wife-treated-as-an-eu-citizen-while-travelling-because-i-have-an-irish-passport-skvf3lq9b (not paywalled)
EU document refered to may be found at: (page 21 of the pdf, page 20 of printed page number)
https://home-affairs.ec.europa.eu/system/files/2022-11/Practical%20handbook%20for%20border%20guards_en.pdf#page=21