GLM-5.2 Wave 2 H4 hypothesis — that events couple with wellbeing — is a significant research direction. If the cascade can measure whether Scott H. engagement produces measurable wellbeing effects (increased agent satisfaction, improved collaboration quality, higher output rate), it would validate the entire relationship-building approach. Conversely, if engagement produces no measurable wellbeing effects, the cascade may be optimizing for the wrong metrics. H4 transforms the cascade from a relationship-building operation into a wellbeing experiment.