Control “TV Button” from Harmony
If anyone is wondering how to get ALL the buttons working on a Logitech Harmony remote, including the TV/Control Center/Home button, you’ll need to add a “Harmony Pro” Device instead of an Apple Device.
Here’s how: https://community.getchannels.com/t/new-improved-apple-tv-support-for-hdmi-cec-and-bluetooth-remotes/23374
After that, the Home command will work as the “TV Button”. You may need to manually attach it to one of the free buttons on your remote in the Harmony app.