So, of course, experiment would produce the same results, yet predictions for "hidden variable" could be different, if some current assumptions would turn out to be false, therefore interpretation of results could change aswell.
There is assumption for quantum theory as well as for "hidden variable", that (emitted photon spin = detected photon spin).
So, within constraints of that assumption, quantum theory explanation of experiment results is that, whatever happens at beam spliter, affects electrons trapped in diamonds (they become entangled through entanglement swapping) and that affects entangled with them fotons (their spins) and that is the reason why we get correlation of detected spins higher than chance.
Within constraints of that assumption for "hidden variable" detection correlation higher than chance can be explained only by experiment setup somehow affecting randomness of emitted fotons (their spins).
I do not think, this possibility have been completely excluded, especially if the same pair of electrons is used for each run.
As, whatever is happening, at beam spliter and detectors, can potentially afect next run possibilities.
Although I see it as a viable possibility,
personally, I do not think, that is what is happening.
If assumption (emitted spin = detected spin) is flawed.
Then, emitted photons (their spins) can be altered at beam splitter.
And, I do think that is exactly what is happening.
Comparison of entanglement to entanglement swapping allows to observe some similarities and differences.
Hidden Variable scenario (entanglement):
Photon with a defined spin is divided, and its trajectory is redirected.
Spin of new pair of entangled Photons is independent from the source spin. Yet correlated with each other.
Hidden Variable scenario (entanglement swapping):
Here, we have redirection of trajectory possibility, and maintenance of trajectory possibility, for both photons, those conditions promote opposite spin detection.
(I can provide more details, why would that be the case).
And, for detection at both detectors, both photons have to either reflect, or pass through.
I couldn't find any information, that would exclude the possibility.
I have experiment idea, that could test, and prove or disprove that possibility.
(I can provide more details, if interested.)
If you have information, that exclude this possibility, I would like to examine them closely.