No need to apologize...very very helpful…thanks for clarifying…the Lumagen does the tone mapping for sdr2020 or sdh2020 as long as you have the JVC in the correct picture mode (not frame adapt). The only difference is sdh2020 sends the hdr flag so your JVC will switch picture modes automatically.
Your JVC won’t do the tonemapping unless you have it in frame adapt (or hdr10 pic mode?)
Im sorry I’m confusing you! Bottom line, if you want the JVC to auto switch on its own, use sdh2020 (flag on) with user 4, 5 or 6 with import of gamma 2.4 you’ve got it set up correctly to let the Lumagen do its thing.
If you don’t care about it auto switching, just send sdr2020 (hdr flag off) and manually change the JVC to a pic mode you’ve set up with 2.4 gamma and bt2020 color profile.