Disagree and commit.
When decision making, after engaging actively to attempt to find commitment, it might be that not enough shared understanding and context has been shared, but a decision still must be made to ensure timeliness. Sharing disagreement and then committing helps balance timeliness of action against results. New information from action can enter into future decisions to enable pivoting decisions, while incorrect suspicions can be disspelled. Consensus does not need to be a target.