Title is misleading. This isn't a new feature of Google Assistant; just a patent. The actual article title is a bit better, but still implies this is a feature we'll be seeing in the near future, which isn't necessarily the case.
I thought mentioning that it is a patent will have little or no effect on whether this feature comes to reality or not.
Edit: Original article title: "Google Assistant will use more than one device to decipher the exact voice commands"
FYI, that's _still_ the article title; it hasn't changed. The HN post title is currently "Google Assistant now can use two devices at same time for a voice command", which is even more misleading to the point of being just flat-out wrong.
If the feature were "published" it would serve as prior art and invalidate the patent.