Bambu Handy doesn’t have LAN only mode, Bambu Studio does have.
Some time ago i tests LAN only mode with Bambu Studio but it was not possible to have live webcam stream. Recorded video and timelapse was possible. Not sure if this has been added in later FW versions.
Request is to have FULL functionality also with LAN only mode. Meaning all functions from Bambu Studio and Bambu Handy.