Complex sentence: Still later, Levitical editors reintroduced interest in Torah and stressed the primacy of the Levites: it was in this phase that Ezra was combined with Nehemiah, minimising the role of Ezra in favour of that of Nehemiah.
Split into simpler sentences: Still later, Levitical editors reintroduced interest in Torah and stressed the primacy of the Levites. In the final phase of Levitical editing Ezra was combined with Nehemiah, and the role of Ezra was minimised in favour of that of Nehemiah.