Fortunately I happen to have a macroscope.
Entanglements are supposed to be disrupted when some external influence is applied to them (the ‘observation’ thing that disrupts a quantum object and causes it to ‘collapse’ into a non-quantum reality.
This description sounds like this ‘circuit’ is the thing causing a false entangelment (holding the two macro-objects in the state that the experimenter thinks it should have.
Entangled objects are supposed to be isolated to retain a real entanglement.