The relationship came to light when a mysterious note was handed to a barrister at an earlier hearing.
It held an earlier hearing on the same topic last Friday.
But the defense went further than it had in the earlier hearing by outlining more of its strategy.
At an earlier hearing the court heard that the police had made unsuccessful attempts to serve the complaint.
This comes in as it did in the earlier hearing.
The Senate will also hold early hearings on trade policy.
An earlier disciplinary hearing at the 106-year-old golf club suspended Branch for six months.
At an earlier hearing, he'd pleaded guilty to driving with excess alcohol in his blood.
At an earlier hearing, he estimated that 200,000 people lived on "cold blocks," where cable service was not available.
In the early hearings this failure to ask the obvious follow-up questions seemed irresponsible.