The AI still can't handle multiple requests in one breath; you have to wait for Alexa to answer one question before you can ask another one.
The basic idea is simple, and a little bit obvious in hindsight.
To indicate that Alexa is listening after completing her utterance, the blue light will be displayed for a few seconds. If you want to ask a follow-up question or issue a second command, the assistant will hear you without you having to call out her name. You can't, for instance, say "Alexa, turn off the lights and set the thermostat to 68".
The first cases were reported in "smart" loudspeakers that feature Alexa (which is on various devices) and from which the robotic laughs came out without cause, which in some users were reminiscent of a witch ... witch.
After purchasing an Amazon Alexa-enabled device, you may have found yourself saying the wake word "Alexa" more times in a given day than you're comfortable with. So, if you see the blue ring at the top of your device, you know Alexa is still listening.
To enable Follow-up Mode on your Alexa device, open the Alexa app and head to the settings.
The feature should be available to the entire Echo lineup and some third-party Alexa devices; however, it's only available for US English and won't activate while you're listening to music, streaming an audiobook, or making a call. The company also says the latter phrase is "less likely to have false positives", or in other words the Alexa software is likely to mistake common words and phrases that sound similar to the one that makes Alexa start laughing.