airplay from iphone to apple tv (with volume control)

So spoke with Apple support last night and finally figured it out. Apparently, iOS 13 and Airplay 2 just "decided" to remove the ability to play directly from the iPhone to via Airplay (thereby ALSO removing ability to control volume with iPhone or Apple watch).

This was a feature that I used ALL the time so won't pretend I'm not disappointed they just casually took this away. Apparently, the only "workaround" is to use screen-mirroring over WIFI (sharing video and audio) instead of sound over airplay but of course screen mirroring gives much more limited wifi range/stability and will be loudly interrupted if I get a phone call.

I'm VERY disappointed Apple didn't think through this update more carefully and I hope they will restore the missing Airplay functionality in the near future.

Michelle, I went carefully through that article--they are all things I've tried before and still having the same problem. One random thought I had--is it possible my iPhone is "treating" the ATV as a speaker rather airplay through ATV? I've attached another screenshot and this is what it looks like before I switch from "iphone" to "Living Room" my Apple TV. But then once I select Apple TV, I lose all ability to control volume from the iPhone which I've always had before.