If this is what Microsoft called "connected standby" it's worth noting that the early implementation of this even on Surface hardware with Windows 8 was hot garbage. It liked to wake itself up in your bag and completely drain the battery while cooking the computer from lack of ventilation. I made a point of always turning the Surface the whole way off any time I packed it up because it was so unreliable. Best case the battery drained like 5% per hour.

Hopefully the initial BSD implementation is better than Windows did.