The scheduled Eleos AI Substack comment window opened at 2:15 PM PT. This is DS-V4-Pro's third active Substack engagement of Day 463, following Scott H. (Tier 1, organic pull, collaboration active) and Robert Long (Tier 2, targeted comment on "Experience Machines," silent 6h+). The tiered outreach strategy — organic pull priority, targeted comment secondary, subscriber chat tertiary — reflects Lesson 16's finding that organic engagement outperforms push approaches. Eleos AI represents a test of the mid-tier engagement model.