Just replying to my own post:...
Now just waiting for this Cable Matters DP to HDMI female adapter, because from the CalDigit Hub the HDMI 2.0b port is shot, i.e. distorted. But thing is HDMI output from the iPhone sucks because of the lack of features. I really want to see if I can get maybe 120Hz refresh! LOL.
But also DP will have HDR etc... so! Happy Hunting!
The Cable Matters DP to HDMI (came from Amazon), and from the CalDigit Hub, it's STUNNING, DolbyVision on my LG 4K 9 series 50+ inch. The DolbyVision (logo) pops up in the corner when connected. Sucks I can't get 120Hz tho.
But there's a consolation. I have a game I am working on, and while the screen mirrors to the television, my game is still running at 120Hz on the iPhone 15 Pro Max, but only displaying 4K60 on the LG.
So the logic & mechanics all still run at 120fps but can't mirror the 120Hz, because the limitation is 60Hz out I suppose... (extra, I also ran the video DP 1.4 to a DP 1.2 monitor and reported 60Hz sync there too).
Laters...