How do devices like this, handle data analysis of two people in a bed?

The latest crop of devices have been single-person-only, for example Alexa, so I assume it doesn't work at all for non-single people, but maybe there's some interesting magic going on in there to support multiple people.

I wonder what this kind of hardware thinks of pets.

You get a married couple, a housecat or two, maybe a dog, the data stream must be very interesting to filter.