I dont think it makes any difference whether a loudspeaker can do Atmos for Video or Audio only - its the same. I think that all B&O speakers over the last 20-30 years can be integrated into a BS Theatre - which is Atmos enabled. The problem is with the Mozart group of products which include the Balance which for some reason cannot yet link as either a front or surround loudspeaker to an Atmo soundbar? The BL28s can do it (with the same engine) but Balance and Level cannot?? I think B&O are protecting product financials by closing off these "less expensive" products from being used with a Theatre or Stage. There has been plenty of noise yelled at B&O over the execution of the Theatre. I am one. You buy a SoTA Atmos-enabled soundbar with the ability to link external loudspeakers......but B&O dont make any suitable surround speakers. I purchased 3 pairs of white BL3's. They are the smallest most compact loudspeaker available. Its a 20year-old design. I cant hang 2 pairs of BL18s from the ceiling? BL17s are probably next in size. In my mind, it would take someone in B&O literally a minute to make the Balance switchable from Mozart-Master to Beolab-slave (and let the Theatre do the DSP). They so far have chosen not to?? But then, even the Balance is rather chunky as a surround. I suspect (from my sources) that B&O are working on a range of compact (and less compact) dual-purpose Beosounds - either as a single all-in-one source speaker or as a Beolab slave. I do not expect that any one of these "possible future" Beosounds will be standalone Atmos enabled. I think you will still have to buy a soundbar of some specific type for that to happen.

I’m not sure of the specifics but there is a technical problem with WISA and WiFi modules in that they have to have antenna separation over 1m apart. However, that should to my mind not preclude a wired option if their role is expanded to surrounds?

Do you mean that if I connect a pair of Beosound levels to a Beolab Reseciver 1s, I could use them as surround speakers with BS-Theatre? If yes, how about the room correction? Would Theater recognise that it is connected to a pair of BS-Levels?

I don’t know if a BS Level has any connections other than the power dock, and no connection to the BReciever1. All for the reason I suspect to reduce the cost of the Level and possibly to push Theatre Owners to higher-end beolabs. I.e. 2 pairs of BL28s in the opening marketing campaign.

Beosound Levle has input connections, see picture

I think the RJ45 is wired ethernet, the usb-c is i think another power-option without the charger puck. Both the RJ45 and usb-c are intended for permanent wall mounting. The manual - as im sure you have seem already makes no reference to Powerlink connections. Interesting that there seem to be different connection boards too?