Timeline display issue (and question)

The question below from my last post was never addressed and the thread subsequently closed as "solved" but it was not solved. So here is my question again:

Is it possible to see only video tracks below the playback monitoring screen (whatever it is officially called) or see only audio tracks (with a quick keyboard shortcut). I know I can click drag to move the division line between audio and video up and down to hide audio or video but it is time consuming  and doesn't always give me the results I am looking for. So is there a shorcut to "display audio only" or  "display video only" below the monitoring panel.

I did find a shortcut to diplay timeline only but then I lose the monitoring panel (whatever it is officially called) and no longer can see/watch what I am doing (watch the video to see my edit changes as I implement them).