Who is in charge of Sydney police when 15 hostages face death?

John Lyons on the absolutely astonishing evidence from the Lindt siege inquest:

Police Commissioner Andrew Scipione began his evidence with the same general position as his deputy, Catherine Burn: I don’t make operational decisions.

Before him, in three days of evidence, Ms Burn had revealed that she went home at 10pm even when 15 hostages were still kept captive, possibly with a bomb.

She also revealed that at no point in the 16-hour siege did she visit...