Battery widget not showing all apple devices

Why is it that the battery widget on any given Apple device I own won’t show the status of the battery charge of all the Apple devices I own? I have an Apple Watch, iPhone, iPad Air with Apple Pencil 2, a set of Beats earbuds, and a MacBook Pro 16”. I get that the widget shows the status based on Bluetooth connection, but given the smooth interoperability and interconnection of all the devices, is there no way to show all the Apple devices in the battery widget?