Const. Isabelle Cyr had been expected to address the court on Tuesday, but defence lawyers said they needed time to review notes and emails between Cyr and her colleagues.
So far, all five resident witnesses have described a scene of overwhelming noise from blaring truck horns and engines, and the persistent smell of diesel fumes during the protest.
Tamara Lich and Chris Barber are co-accused for their role in the protest that blocked city streets around Parliament Hill and nearby residential areas.
Tamara Lich and Chris Barber are on trial for alleged mischief and counselling others to commit mischief, intimidation and other offences during the protest.
The trial will hear from those who provided daily situation updates to then-Ottawa mayor Jim Watson and the rest of city council during the demonstration.