When connecting Decora Smart® No-Neutral Products to HomeKit each lighting control device appears in the Home app; however, the MLWSB does not appear.
To find the bridge press the Home icon in the upper left corner.
Choose Home Settings
The Bridge is found in the 'Bridges' section. Choose the bridge for more information.
The information screen will show all of the information about the bridge. Press Accessories to see devices connected to the bridge.
To confirm which light is connected to the bridge you can press the icon and it will toggle the light.