It appeared that most of the cars were sitting very close to the "grand divide " of tire temperature, slowed a very small amount from really hot pace and they slipped just into cooler and less ultimate grip, as in the opposite direction it squeezed them just into optimum-ish balance of traction and wear/longevity.
Not much shift, but those drivers with accute experience of marshaling grip seem to have a heightened perspective of exactly where they are on that scale. Sometimes a little surprise is inevitable though, FA example in oversteer and GR example of understeer going in to then give offline trajectory with not enough room to work with on exit. GR quite sanguine about having close walls though.
It must be fun running them as close as possible to the barriers for a driver though, leaving nothing to spare.