Voice messages between more than 2 people? Oh interesting.

I do this with a friend in England that I met and became ultra fast friends with years ago. We traveled Asia together for 2 months. Haven't seen him in years and honestly might not again! But we are buds for life and keep in touch via async voice messages. The other day I sent him a short one asking a relatively intimate question and received a reply with an 18min message. Receiving it felt like Christmas.