The second situation, is when we are matching a print, in which case color inconsistencies within an aging the print may play a role. However, even for the Star Wars bluray, which probably has the most inconsistent color timing ever, accurate predictions can be done within shots.
First the model is calibrated on this frame:
Bluray:
Bluray matched directly to Tech IB:
Then I predicted the folowing frame:
Bluray matched directly to Tech IB:
Predicted correction with color correction model from the above reference frame:
The prediction is pretty much identical.