The reason you could not find any threads on this is because the cross is impossible. Parrot Cichlids are hybrid Central American Cichlid and Gold Severum are South American Cichlids. Central American Cichlids can not hybridize with South American Cichlids (except for Festae).
So even if you fish pair they can not produce fry.
Side note: Male Blood Parrots and King Kong Parrots are almost always sterile, King Kong Parrots have a slightly higher fertility rate than Blood Parrots but it is still next to nothing.