Here's an interesting little matter - Innovia Security Pty Ltd v JDS Uniphase Corporation  APO 5
In this hearing, the Commissioner's Delegate decided that it was against the public interest to grant an extension where "it had been almost a year since the initiation of settlement negotiations, and that it appeared there had been a decision not to bother collecting evidence because of the settlement negotiations." The Delegate further supported this on the basis that the evidence did not suggest that there was a "serious opposition".
On the other hand, both parties were in favour of the extension. The balance of the considerations lay against allowing the extension of time. A short period of one week was allowed for filing any evidence readily available.