The head of an inquiry into the murder conviction of David Harold Eastman has warned he may have to step in if a dispute over legal representation is not resolved within two weeks.
Eastman is serving a life sentence for the 1989 murder of Australian Federal Police assistant commissioner Colin Winchester.
An inquiry into Eastman's original conviction was stalled when members of his ACT Legal Aid Commission team were forced to stand aside last month.
His senior barrister John Harris was one of three legal team members to step aside after advice from the ACT Bar Association president backing an objection to his role from the ACT's Director of Public Prosecutions.
The DPP argued John Harris had a conflict due to past association with the case.
The inquiry has been told no new lawyer has been appointed and Eastman's legal team is seeking further advice.
Lawyer Helen Hayunga told the inquiry, Eastman wants to fight the challenge because he regards the DPP position as an unacceptable interference in his right to choose his counsel.
Inquiry head, Acting Justice Kevin Duggan has given two weeks for the situation to be resolved.
In the meantime, counsel assisting the inquiry Liesl Chapman says the material gathered so far runs into hundreds of thousands of pages.
She says her team is working full time on gathering information to prepare for the inquiry.
The inquiry was to have formally begun today, but Justice Duggan has conceded it may not start for several months.