If you look near the end of the section titled "Meetings to discuss changes to this specification", you will see links to two Google drives. The first contains various files that have been published over the last 2 years, some probably only of historical interest now.
The second link is to the 'meeting-recordings' sub-folder, which contains copies of all published meeting recordings. The intent is to leave these up for a limited period of time, e.g. 3 months after the meeting is held, then delete files older than that.
Please try out those links, especially if you want to listen to the recordings, and let me know if you have any trouble accessing the files at those Google Drive links.
Also, as a reminder, the link to the Google Doc where meeting notes are recorded is in that same README.
Regards,
Andy Fingerhut