The final schema up for debate in the First Session was De Ecclesia with debate taking place from 28 November – 4 December was De Ecclesia.
Again, the Jocist bishops took the lead. In fact, trouble had begun inside the Doctrinal Commission when Léger and Garrone refused to endorse the proposed schema, Léger even threatening to resign from the Commission if he were not free to criticise it in the plenary.
SOURCE
Stefan Gigacz, The Leaven in the Council, Chapter 7, The Council opens without Cardijn (Australian Cardijn Institute)