In Classical Mechanics, according to SR, the concept of simultaneity is dead, a meaningless concept. But in QM, entanglement implies that some limited form of simultaneity exists. If we have two particles correlated due to entanglement, a measurement of one particle immediately gives us the probabilities of measurement outcomes for the other particle. “Immediately” implies some kind of simultaneity. (I realize that the above scenario does not imply faster-than-light transfer of information). Is simultaneity still alive in QM? Thanks in advance.