Two companion apps with one Mycroft server?

Hello, I have a setup with two companion apps and one Mycroft server running in Docker. I realized that Mycroft does not differentiate these two devices - means it utters on both of them when responding.

I wonder if there is a feature already that I can use to have conversations on both of them at the same time. My first thought was to add context to the message bus that holds a unique identifier (e.g. user name or device ID). What ideas do you have to solve this issue?