In this fourth article of my PhD dissertation, I examined the connections between ratings and measures of L2 fluency based on dialogue data. Fifteen raters’ assessments and comments of individual fluency, interactional fluency, and strategic competence based on six samples of L2 peer interaction were examined. The results demonstrated correlations between the ratings and measures for individual and interactional fluency, but not for strategic competence. The raters’ comments revealed a multifaceted understanding of interactional fluency and strategic competence.