I didn’t realize this until today, but, if you are streaming from a Bluetooth source, the Programs still work. For example, if I’m streaming music, it appears to stream through the current program. If, while streaming music, I change from program 1 to the music program it sounds so much better. Program 1, with frequency compression, is a little rough on music. I normally don’t even notice that but I just changed to the music program while streaming and it sounds like music now!
So when streaming I could use program 1 for dialogue and music program for music or mixed streaming.