Seems to me you're confusing an active system such as one using thermometer-innards with a passive one as described, in which the only reaction is in fact to suspension forces.
Imagine a right hand bend - the front left suspension is compressed and the rear right (inner) wheel wants to lift. Use some of that compressive force at the FL to drive fluid into the RR and you have a rear (driven...) wheel that is being held down with more force than without the linking.
And yes I'm sure Mercedes will get a 1-2 in AUS because they have a super-sekrit front wing f duct or whatever that is so powerful an idea they can't risk running the new car, with or without it, at 1 of only 3 testing opportunities. Every year January is exactly like this
too much fan interest and not enough data!