I bought this bundle from John Lewis, and have had a total nightmare with it. I would never buy A/V equipment from John Lewis again.
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Previously, I had an Amazon fire stick 4k Ultra HD, and a Sky box,
both running to an HDMI switch (
https://www.amazon.co.uk/gp/product/B0BLVYYTMR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1), then running through my Samsung HW-Q800B soundbar (outputting Dolby Atmos)
to an EZCOO (
https://www.amazon.co.uk/HDMI-Audio-Extractor-60Hz-embed/dp/B07TZRXKYG?ref_=ast_sto_dp&th=1&psc=1) converter, which downscaled to just HD, for an old TV.
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John Lewis could not install the new TV. The installers were qualified to open boxes and move objects. John Lewis support contact was clueless, and had me spend cumulative days of my time trying to get a working config. John Lewis refused to send out an engineer. I would never buy A/V equipment from John Lewis again.
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My current belief is that the Panasonic TV is extremely intolerant of any change to the EDID and CEC properties of inputs to its HDMI connectors. It seems that to make any change, mains power needs to be physically disconnected and re-connected, after which the new config _might_ work.
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I'm now studying how EDID works, in the hope of getting a config that I can control by remote control.
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This is ridiculous. Consumer technology should not require deep study of electronics protocols. HDMI, as a protocol, is not fit for purpose.
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