Reported previously he is to appear in February so that is a matter for the Senators to show whether it is acceptable or not.
Seems there may be a game of bluff going on, so lets see who gives ground first.
The real issue is that if February is real, then it delays the outcome whatever that may be.
One could be cynical that the Rat is not too keen to pander to this lot especially given the treatment he got last time.
However, whether it is acceptable for a CEO to put parliament down his list of priorities is another issue and I would suggest is a brave call except if the Chairmans Lounge is working.
Time will tell I guess.