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So just connect the keyboard/webcam to the back of the screen and it should all work.
The keyboard and trackpad are USBC so, I'm not sure if that would work without an adapter? But, they're the Apple ones, so should only need plugging in every so often to charge. The webcam I haven't bought yet, still deciding what to get, but I'm guessing this means I'll need to a get one with a normal USB cable.
Muppetteer-
This is exactly what I have … LG Ultrafine 5K used with a 2016 MBP or 2020 M1 Air.
One cable from laptop to screen. Then a lightning cable from screen to use to charge/connect Bluetooth keyboard and mouse, plus a USB C to 3.5mm adaptor for my speakers and a USB C to USB A cable for a charging mat.
All works fine. Only issue I have is a bug managed to sneak between the display and the front panel about two years ago and is now stuck in the centre left of the display.
beseku
From the specs (or the image in there somewhere) looks like it already supports this. If you connect it with the supplied USB-C cable you should be able to use the usb ports behind the screen as well as up to 60w power delivery (which might or might not be enough depending on your laptop)
So just connect the keyboard/webcam to the back of the screen and it should all work.