Connectivity and community structure of online and register-based social networks Márton Menyhért, Eszter Bokányi, Rense Corten, Eelke M. Heemskerk, Yuliia Kazmina and Frank W. Takes EPJ Data Sci., 14 1 (2025) 8 Published online: 28 January 2025 DOI: 10.1140/epjds/s13688-025-00522-4