1. Emotional escalation: He may gradually become emotionally agitated for some reason, causing his rebuttal or response to become more rapid and intense during communication or argument.
2. Agile thinking: Another possibility is that as the discussion deepens or the topic intensifies, his thinking becomes more agile, able to quickly find points of rebuttal or propose new viewpoints, resulting in an increased speed of confrontation.
3. Change in communication style: This may also reflect a change in his communication style, from initially calm or composed communication to a more direct, rapid, and conflicting response style, possibly to emphasize his position or gain more initiative.