The loudest opinion in the room just feels like the majority. Go ask the corners.

Volume gets mistaken for consensus because people who disagree tend to go quiet rather than argue. What you hear is the view of whoever is most comfortable speaking, which tracks confidence and seniority far more closely than it tracks being right. Decisions made that way surprise everyone later, when the quiet view turns out to have been widely held.

Ask two people individually what they think, preferably ones who said nothing. Do it away from the room and away from the loud person. The balance is often nothing like what the meeting suggested.