Stevenson v A/Prof Morgan  NSWSC 1230 was an interlocutory dispute as to whether a vocational assessor and an occupational therapist should participate in a joint conference with rehabilitation physicians.
At  the court noted:
The defendants’ position is that all four should participate in such a conference because, although they do not share the same expertise, there is a measure of overlap between the issues upon which they give their opinions. The plaintiff’s position is that there should be a joint conference only of the two rehabilitation physicians, on the basis that ….. are not experts in the discipline of rehabilitation medicine and, in addition, the expertise of each of them is different from that of the other.
At  the court concluded that the the disparate expertise of the authors of counted against a joint conference of all four of them.