Google Chrome Push Notifications not working if the browser is closed?

Question

It is written here that the push notifications will work even if the browser is closed, but I tested it and it is not the case. I receive push-notifications only if the brow

Answer 1

The messages should (eventually) get through even if they are sent while the browser is closed, or the device is offline, etc. (And this works for me using https://gauntface.github.io/simple-push-demo/ and other tests.)