The full interview with David Brown has been broadcast on BBC North West local news programmes through the day, for example
North West Tonight Evening News, 5 minutes in on iPlayer. He attempted to pin blame on the electrification delay, saying that the whole May timetable had to be "thrown up in the air and retimed" when Network Rail informed Northern of the delay at the beginning of January.
That reminded me of the letter from Liam Sumpter (ARN regional director) to Lisa Nandy MP on 11 January, when the electrification delay was announced. It was reproduced in full in Post #5932 of the
Blackpool - Manchester Electrification thread and included these snippets (my bolding):
If Arriva had agreed to the alternative option of a two month blockade on the Bolton corridor, development of the original May timetable could have continued to the normal schedule. And some Northern drivers would have been temporarily released from normal duties in the corridor, enabling acceleration of route learning for the modified services planned elsewhere on the network.
It is a moot point whether or not the impact on Northern's customers of the blockade would have been as bad as the chaos of the last three weeks.