yes, you're right. I've compared the 3 streaming services P5 web-dl tonemapped to SDR and on itunes, the red looks more orange/brighter. I prefer how it looks on MA and HBO... https://slow.pics/c/MrSz6BQ4
So iTunes does something different in their RPU( i wonder why) and it explains why we couldn't get a match with @manix Atomos Shogun appleTV samples here viewtopic.php?p=111073#p111073
The HDR10 color mismatch from MA and HBO is something else.