Digimado has published a compilation of all the Q&A that were adressed to Konaka & Nakashima during the event:
*Chiaki J. Konaka: http://digitalmado.com/Hypnos/meeting2019/ancer_k.html
*Yuki Nakashima: http://digitalmado.com/Hypnos/meeting2019/ancer_n.html

Hope anyone fluent in Japanese may do a translation of all them rather sooner than later. It seems there's a lot of behind-the-scenes trivia and interesting notes to discuss.