Hide Siri's window on macOS Sierra After asking Siri a question on macOS Sierra -- her response window just stays pinned in the upper right corner.

Is there a keyboard shortcut or another siri command to hide that window without having to click the small "x" button?  Maybe a way to make it automatically close after some time has passed?
Without Type to Siri enabled, you may close the Siri window at any time by pressing the ESC key. However, I am unaware of a way to automatically close Siri after some time has passed or by using the keyboard with Type to Siri.