Radhika Oswal, wife of Pankaj OSwal was due to be cross-examined in the Victorian Supreme Court on Thursday but the case has been delayed for an unspecified period.
Meanwhile, it is learnt that the ANZ bank and Indian businessman Pankaj Oswal and his wife Radhika may be close to settling their mammoth legal battle.
AAP understands the Oswals and ANZ are close to a settlement deal with talks between the parties continuing on Thursday.
Fairfax reports the size of the settlement is unknown but is expected to be well short of what the Oswals were seeking.
The former Perth couple had been seeking at least $1.5 billion and up to $2.5 billion over the sale of their Australian fertiliser business.
Earlier mediation talks failed but the ANZ and the Oswals have held further discussions this week, after Mrs Oswal took the stand in her duress case against the bank.
Mrs Oswal claims the bank pressured her into signing a guarantee over $US568 million in debts to prevent her husband going to jail for fraud over falsified security documents.
On Wednesday she told the court: "There was no other way out. I had a gun at my head."
The court heard that during heated discussions in December 2009, Mrs Oswal's lawyer Grant Pestell told ANZ group general counsel Bob Santamaria she would still not sign anything.
"Bob Santamaria said to Grant do you realise that both of them could go to jail and their children would become orphans," Mrs Oswal told the court.
She said then ANZ chief risk officer Chris Page told her there were people at the bank who believed she was involved all along, which she denied, and she too could go to jail.
She said her husband did not want the bank to expose his role in the fraud, nor did the ANZ want it to come out.
She said Mr Page told her: "If we wanted this to come out don't you think that we would have already reported the matter and sent Pankaj to jail?"
The bank appointed receivers from PPB Advisory a year later, in December 2010.
The Oswals argue the $US560 million sale of their 65 per cent Burrup Holdings stake in 2012 represented less than half its true value.
The Oswals have already reached a confidential settlement with one of the buyers - US company Apache Corporation while talks continue with their former co-shareholder, Norwegian chemical company Yara.
