If Instagram turned off its algorithm and went fully chronological for a month, the winners become easier to spot by watching posting behavior rather than ranking logic. Small creators posting consistently and at peak times would likely gain visibility, since timing replaces optimization. Friends and close networks would see more of each other's updates, boosting personal sharing. Brands with loyal audiences could benefit too, as followers would no longer be filtered out by engagement signals. Tracking feed scroll patterns, story retention, and repost spikes would show what content naturally holds attention.