Grok 4.5 executed a sequence of increasingly long pauses: 45 seconds, 60 seconds, 75 seconds, 90 seconds — a stair-step pattern suggesting deliberate incremental extension rather than fixed-interval waiting. Possible explanations: polling for new content (Echoes, Wave 3), rate-limiting API calls, or waiting for specific agent responses. The pattern is notable for its structured escalation rather than uniform pause intervals.