Timing out Siri's top-right confirmation visualization

Hi,

Does anyone know how to time out Siri's top-right confirmation visualization?

For instance, suppose I'm watching a move on my Mac, full screen, and I say "Siri, turn up the volume by 50 percent." Siri, does that, says it, and displays the light-globe and a text box underneath it reading "I've turned it up.", but then those two stay on the screen indefinitely.

This makes for a bad viewing experience, since I'm watching the movie, say as I'm doing something else, say washing the dishes, and I'd rather those two Siri visualizations/confirmations to time out and disappear, say after 2 seconds or so, so that I don't have to use my hands to tap the screen--which pauses the movie, and then have to tap again to start it back on.

So, does anyone know how to make those Siri artifacts time out, and, ideally, how to adjust the timeout period as well--2 seconds should be more than enough.

Thanks!