The regular total fixes the transformed outer span
The regular Creation–Flood–Conquest path consists of 1650 and 1050 years. A single placeholder-preserving reversal gives 5610 and 5010, totaling 10620. A broader mathematical fact explains why this outer total is stable within its particular decimal register.
Both original components have three-digit cores followed by exactly one zero: 165 and 105. For any two components in this same register, let H, T, and U denote the sums of their hundreds, tens, and units digits. Their original total is 10(100H+10T+U), while their reversed total is 10(H+10T+100U). Because both core endings are nonzero, H and U lie between 2 and 18; T lies between 0 and 18.
An original total of 2700 forces U=10 and 10H+T=26. Those bounds permit only H=2 and T=6. The reversed total must therefore be 10620, placing its endpoint at 12026 BC when 1406 BC is held.
The theorem determines the outer measurement without recovering the internal split. The source-appointed Flood boundary still supplies that information. Other mathematical allocations within this register illustrate the theorem but receive no chronological admission. Reversing the unsplit 2700 uses a different register and retains its established, different result.