CNET programmed each device to activate the next device. The chain was broken twice by Siri, three times by Alexa, and once by Google Assistant before the site called it quits. It's unclear why the smaller Echo Dot was used to rival the HomePod and Home.
The loop works like this:
1. Use your voice to get Siri to read a reminder.
2. Siri triggers the Google Assistant to read a calendar entry.
3. Google Assistant triggers Alexa to read a to-do list.
4. Alexa triggers Siri to read a reminder and the loop starts again (back to step 2).
Take a look at the video below!