CAKE w/ Adaptive Bandwidth [August 2022 to March 2024]

OFCOM is the UK's communications regulator, but they do not stand up to ISPs:

I see from this document:

Vodafone UK state:

I wonder what form the optimisation of the latter takes. I mean I notice vastly increased cake bandwidth is set in cake-autorate whilst a 4K video stream is active. Does that mean that the whole connection is boosted whilst there is a 4K stream active I wonder.