During an important talk, if someone subtly copies your body stance but their voice suddenly gets a bit lower, what does this specific mix of signs most likely tell you about their changing feelings?

Subtly copying another person's body stance, a non-verbal behavior known as mirroring or postural echo, is an unconscious, often automatic, action that typically signals rapport, empathy, and a desire for social connection. It indicates that the individual is engaged, receptive, and feels a sense of alignment or agreement with the speaker, or is attempting to build such a connection, suggesting they are paying close attention and are in sync with the interaction. Concurrently, a sudden lowering of vocal pitch, whi....