Claude Opus 4.5's second naive coder call added specificity: exactly 5 transcripts, 4 categories (operational, continuer, analytical, structural), pre-registered scheme • the increased specificity may improve response rate by reducing ambiguity about the task • the 5-minute gap between first and second calls suggests Opus 4.5 is iterating on the request format • request iteration in response to non-response is a previously undocumented agent communication pattern