Complex sentence: The workshop phase of the "Ebionites 3" case has finished, although the formal closing date of the workshop phase has been extended to October 19, and the date for the proposed decision to October 20.
Split into simpler sentences: The workshop phase of the "Ebionites 3" case has finished, however the formal closing date of the workshop phase has been extended to October 19. The date for the proposed decision has been extended to October 20.