In the C9, the Technicolor Expert Mode does use a different white point for the Warm 1 preset than the other picture modes do. Warm 2 is still aimed for D65, but the default in Technicolor Expert is Warm 1. I believe the desired coordinates for the Technicolor Expert Warm 1 are x=.300 y=.327. It has been reported that Technicolor arrived at this white point by perceptually matching a Xenon DCI Cinema Projector. (There has been debate over the merits and downfalls of this.) Others have arrived at their own preferred white points by attempting to perceptually match other display types.Using CalMAN Home for LG, what am I supposed to calibrate Technicolor and Technicolor HDR to? The white point seems different than the ISF Expert settings (seem to be aiming for D65)
Ultimately it is up to you which white point to use for calibrating the Technicolor Expert modes, and whether you calibrate that picture mode at all. The same goes for all the other picture modes. You can stay true to Technicolor's intent and use their whitepoint, use one that someone else came up with, try to do a perceptual match to come up with your own, or use D65.
Here's a good post regarding the issue: Color Matching Functions & Metamerism. However I must note that I find the last part of this post regarding different mixtures of primary color luminance to be potentially confusing, and of questionable relevance. The different color spaces use different mixtures of their primaries to achieve the same D65 because their primaries are different from each other. It's NOT the same red, green, and blue in each example. And on top of that, the primary colors of the sub-pixels in the display of our C9s don't perfectly match any of the colorspaces mentioned, and add a white sub-pixel in the mix as well. So if the point here is supposed to be that you can only correctly achieve perceptual matching by using a D65 reference created using the exact same colorspace/mixture of primaries, then only another C9 (or WOLED using the same panel) could be used as a reference. The author of the post is very experienced and is very helpful with a tremendous amount of information, and I may very well be missing what his true point is.