Just idle curiosity. I noticed when I hold down the play/pause + the volume up buttons on the Siri remote for 6 seconds, I hear a "screenshot" (camera shutter) sound. Seems this is a diagnostic tool, similar to play/pause + volume down for 6 seconds, which provides analytics, via AirDrop.
But where are these screenshots saved? Are they in fact screenshots, or something else? I Googled and didn't see any answers.