Incompatible communication styles (turn-taking vs. constructive overlapping) can be frustrating. Turn-takers may consider overlappers to be rude and aggressive and try to stop the overlap, which overlappers may in turn consider rude and aggressive; yet full-duplex is more efficient than half-duplex and even basic ACKs are important for reliable communication.

Unfortunately Zoom is 1/N-duplex, which ruins it for everyone.