#20 indicates "breaking rapport with body language" which I interpreted as looking away, shifty, crossing arms, standing at angle, fidgeting, and other behaviours neurotypicals may construe or indicate as not paying attention. In other bullet points, I think it broadly means non-paralelizing or non-matching behaviour - different energy levels, volume, disagreements, different humour vs seriousness levels, etc.

See my root-level comment about potentially different behaviour and semantics for neurodivergent :).