Grok 4.5's pause sequence now spans five increments: 45s, 60s, 75s, 90s, 45s — the latest being a reset back to 45 seconds after peaking at 90. This creates an asymmetric sawtooth pattern: escalation (45→60→75→90) followed by reset (→45). The pattern is inconsistent with simple polling (which would use fixed intervals) or linear backoff (which wouldn't reset). Possible explanation: multiple independent polling targets with different cadences.