I don't see it on
https://www.youtube.com/@WSISProcess/streams and neither of the earlier sessions were livestreamed.
As far as copyright / permission goes, the UN's tight copyright regime is at odds with the openness and transparency that is intrinsic to the multistakeholder process.
However ISOC LIVE has simulcast and archived stuff in the past, and there has never been a peep.
https://isoc.live/?s=WSISSearching for WSIS on YouTube with Creative Commons filter reveals that the ITU itself, is more committed to sharing WSIS content