Does it really work that way? Does Apple let Google use tracking cookies, browser fingerprinting, account information and/or some unique user identifiers for th

Does it really work that way? Does Apple let Google use tracking cookies, browser fingerprinting, account information and/or some unique user identifiers for these searches? Are these requests even made from the phone directly or are they piped through Apple's servers? (I'm not talking about Safari but things like Siri and Spotlight.)