I explained wrong, again.
I read the colourspace used in films is P3, like BT2020 contains P3, in UltraHD films the content is passed from P3 to Bt2020, that actually it is not used beyond the points of P3 in BT2020, the limit is marked by DCI-P3 in BT2020. Is this correct?
If it is correct, I think is more logical try to calibrate to the space marked by DCI-P3 in BT2020, than the limits of BT2020. If the previous paragraph is true.
The UltraHD players is going to play the films in BT2020-HDR, I don't know is some player plays a UltraHD film without HDR; moreover, Netflix thinks to film all in HDR (that was published in Spain). The TV is OLED, the luminance peak is not near of HDR specefications, I don't think is too logical to try calibrate to HDR (to the luminance), the objective would be calibrate to BT2020 but "ignoring" the HDR, if it is possible.
I hope I explained it better.
Thanks in advance.