This ad hoc query examines national practices across EMN Member and Observer countries regarding the duration of researchers' residence permits under Directive (EU) 2016/801, procedures for managing gaps between hosting agreements during permit renewals, and the impact of such gaps on continuous residence requirements for long-term residence and citizenship. 

An EU directive to harmonise EU entry and residence rules to make it easier and more attractive for people from third countries to study or do research at EU universities.