Statement: Denmark Continues its Work on Digital Sovereignty with Collabora Office
(www.collaboraonline.com)
The first phase was successfully completed. Collabora Office was integrated with F2, demonstrating that individual users could freely switch between Collabora Office and Microsoft Office when editing documents, while maintaining their documents within the same government platform and using Microsoft-compatible document formats.
This could be weasily phrased. I recall a comment mentioning sticking point was documents in Microsoft-specific formats. Obviously open formats would work in Office.