Four weeks have passed since the Senate finance committee published its report, PwC: A calculated breach of trust, and since Labor senator Deb O’Neill characterised as “quite implausible” that Luke Sayers – PwC’s chief executive when the ATO discovered the firm’s tax leaks – had known nothing about it.

O’Neill was responding to Sayers’ obtuse statement (via a spokesman) of June 21 which, for flimsy exoneration, relied upon the fact the Senate report only mentioned him once.