I know a recap OVA sounds boring, but Extra Edition has about 30+ minutes of new content (a fun ALO swimming quest + school scenes). The 1080p VOSTFR release makes the underwater dungeon actually beautiful.
Currently available on major streaming platforms (Wakanim/Crunchyroll depending on your region) or in quality releases from fansub groups like HorribleSubs (older) or EveTaku . Look for the “BD 1080p” encodes. Sword Art Online Extra Edition Vostfr 1080p
r/swordartonline or r/anime