This morning, Justice Ian Gault heard from Mark O'Brien QC, who is representing PwC, MacKay and Rhodes.
He said the liquidators' claims against MacKay and Rhodes should be struck-out because the contract between PwC and CBL Insurance had a clause not to sue individuals.
O'Brien also sought to strike out those claims against PwC which were above the contractual cap, which he added the liquidators were bound by.
He told Justice Gault if the judge didn't do so then the liquidators would be "pursuing a claim ... well into the hundreds of millions".
"I'm not suggesting the claim is frivolous but it certainly is vexatious in the sense it's contractually impermissible," O'Brien said.
CBL Insurance's former CEO and managing director Peter Harris is also a defendant in the claims by the liquidators.
The hearing is expected to continue into tomorrow.
There are four sets of civil cases before the High Court over CBL's collapse, including one brought by the Financial Markets Authority, the liquidators and two proceedings in the form of shareholder class actions.
The group of civil proceedings are also running concurrently to a criminal case being prosecuted by the Serious Fraud Office against Harris and a co-defendant, who has interim name suppression.