Did the Bohrok-Kal know where the Bahrag were?

As the failsafe strike team for the Bahrag incase of their imprisonment, wouldn’t the Kal know where the Queen’s chambers are? In an interaction with Tahu Nuva in, “Makuta’s Revenge”, Nuhvok-Kal stated with emotional rather than factual conviction that the Bahrag were still around, in response to Tahu stating they were no longer on Mata Nui. In addition, in all the verbiage surrounding the team’s mission seems to indicate that they were required to find the Bahrag instead of traveling to a known location. Why is this?