After setting up automation routines using the Elgato App, we wanted to see what we could do in setting up similar automation with the Nest App.
The Nest App does have a Home/Away Assist page to support some simple automation routines like turning on the Dropcam camera when you are away from your home.
There isn't much you can do with Nest Protect even though it should have its own Carbon Monoxide and smoke detectors, as well as motion detection sensors.
Fortunately, you are able to set up e-mail and push notifications which is difficult to set up through Apple's HomeKit.
Perhaps as more product support Nest, there will be more automation supported through the Nest App, Google Home App, and Google Assistant.