Yesterday in the afternoon, yeah. He also talked about how Youtube is doing a good job burying his content, so few people are even aware of that channel, unfortunately.
You can see a bit of him talking about it at the end here. This recording was made by an archivist buddy, we couldn't recover it fully so the quality is low and it cuts off at the end.
https://gofile.io/d/vj5CRL
"I'm sorry it (the channel) got so burried, guys. I'm sorry Youtube did this, it was such a mindblowing thing to find out yesterday (presumably the previous stream I missed), it really was, it gave so much context! [...] No wonder people don't know this stuff, this has been happening for how long now!"