This paper first addresses three methods of aligning the Egyptian and biblical timelines, with comments on why the Courville system is untenable. Second, it discusses how the Sixth and Twelfth Dynasties of Egypt could have reigned simultaneously. Third, it shows that radiocarbon dating does not support Porter's claim that the Sixth and Twelfth Dynasties could not have reigned concurrently. Finally, Bayesian mathematics should not be used in radiocarbon dating, as it produces biased conclusions.