Alexa has the ability to determine if you are whispering, and if you are it will respond at a lower volume. I am able to whisper to my echo dot and get a whisper response. With the AVS kit, the utterance “alexa turn on whisper mode” yields “Sure. Whispered responses is now on.”. However, I cannot get the device to respond quietly. Is this not supported on this device, or are the microphones on the kit not good enough to detect whispering?