Complex sentence: Judges' houses was planned to be broadcast fully live, and filmed back-to-back, but on 15 September, it was announced that this would not happen as it would cause logistical problems.
Split into simpler sentences: Judges'houses was planned to be broadcast fully live, and filmed back-to-back. However, on 15 September, it was announced that judges' houses would not be aired live as it would result in logistical problems.