Spotify now allows you to create joint music sessions for multiple users
However, any user of the running session can control playback, add or remove tracks. Unfortunately, the chat was not provided, so you will have to negotiate the playlist via a third-party messenger. To start a joint session, you need to find the appropriate menu and share the automatically created link with your friends.
Note that the Group Session system is currently only in beta testing mode, but Spotify plans to leave the feature permanently and periodically update it (maybe they will add a chat).