Does it spoof? If X calls Y and gets forwarded to Z, does caller ID at Z show X or Y? As a possibly naive user, showing X seems like the right thing to do, sinc

Does it spoof? If X calls Y and gets forwarded to Z, does caller ID at Z show X or Y? As a possibly naive user, showing X seems like the right thing to do, since that's the number Z will be connected to if someone answers.