# C331 — Actual Noah-death partitions of the existing 2K edge

**All four C287 SP paths admit the partition 950+108=1058=2K.** Their actual MT Noah intermediates distinguish primary from companion paths: primary gives 460+490+108, while companion gives 459+491+108. The source review verifies four annual and eight coherent component paths in 57 checks.

N is the original SP Noah birth; M is the actual same-Gear MT restored-ON/Terah60/full430 Noah birth; D is the SP Noah death matching N's Gear and primary/companion rail; R is C287's existing next-Gear MT Flood boundary.

| i | SP rail | N → M → D → R, BC | Adjacent spans | R identity |
|---:|---|---|---|---|
| 2 | Companion | 3705→3246→2755→2647 | 459+491+108 | MT G2 Flood close |
| 3 | Primary | 3706→3246→2756→2648 | 460+490+108 | MT G2 Flood start |
| 4 | Companion | 3707→3248→2757→2649 | 459+491+108 | MT G3 Flood close |
| 5 | Primary | 3708→3248→2758→2650 | 460+490+108 | MT G3 Flood start |

Every N,M,D,R is an existing C286 record with the stated role and context. SP remains OFF/Terah0/full430. The close boundary is an MT event endpoint, not a person companion inherited from SP.

C281 already established that restored MT Noah births 3245 and 3247 are absent. They must not be inserted into the companion paths to preserve a desired 460/490 split. With the actual M records, the primary M→R relation is 598=490+108; the companion M→R relation is 599=491+108. This is a source-admission distinction, not an arithmetic correction to the older scalar identity 598+460=1058.

File18 §3.2.1, lines1571–1583, controls the matched SP birth/death rails. Primary Noah death retains its inclusive/harmonic qualification; companion death retains its ordinary-companion qualification. Both matched biographies preserve 950. File18 line1460 prevents adding an inclusive year indiscriminately. The same inherited component offset is retained along each path, without creating a new phase or merging cumulative ancestry.

The 108 leg is a **dependent interior measurement**: C287 supplies the existing 1058 outer edge, and the source biography supplies 950. Their difference does not add an independent numerical witness. The prior-work locator identifies C10 and C287 as explicit prior art for the adjacent-Gear 2K endpoints and 460/598 arithmetic; its failure to locate this 950/108 presentation is bounded, not an archive-wide novelty claim.

C287's co-located LXX Noah labels remain unchanged at i3/5. This review inserts SP Noah-death records only; it does not launch a LXX death study or transfer SP counting qualifications to those aliases. No new MT companion, expansion anchor, E prescription, or source selector is established. **C332 was not executed.**