Today, Google announced on Twitter that support for up to three simultaneous commands is rolling out to users in the U.S., U.K., Canada, and Australia. But at this year's I/O, Google promised improvements to multiple commands that would require less verbosity and would allow more than two commands at a time.
I am not sure how long this has been live as Google didn't announce it and we haven't been testing it, but I think it's relatively new as the support page still says this won't work. At the Google I/O 2018, the company had announced the multiple actions feature, but it has just started to roll out now.
The tweet was, however, deleted, indicating that the feature may not be ready right now. For example, say "Hey Google, tell me the weather in Boston, London, and Sydney", or "Hey Google, turn on the Chromecast, the coffeemaker, and the bedroom light".More news: Deaths of African baobab trees linked to climate change
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The ability to chain three commands is now rolling out to Google Home users across the United States though it may be a while before it goes live for all users. Each command must also be the sort of thing Google Assistant can respond to on its own without further input or clarification.
Adding a third request could save time for people who have a lot of smart home appliances controlled by their Google Home, according to CNET.