I wasn’t able to attend the latest tech talk, so I’m unsure if this was already done. The discourse topic page for the tech talk could be linked to and commentary encouraged there, or the content could be reposted there. Since I missed the talk, it would have been interesting to see what Q&A questions came up on this page: Functional Programming in Financial Markets
Breakout sessions work reasonably well to make talks engaging, as they encourage focused attention.