Make previous/play buttons on touchbar disappear when not playing?

Is there any existing or planned feature to make the previous/play buttons on touchbar disappear when not playing any music or sound? Make them part of the "now playing" widget?

If no, how can we do that?

Thanks!

Any idea on this?

A possible work around is placing all of your media buttons in a conditional activation group with a custom BTT variable of what app is now playing. If "____" is not current player -> desired action (hide/etc)

Thank you. I tried and didn't find how to create a conditional activation group. Any advice/link I can look for?