One SELECT EDGE (not hold duration) selects the 2-player variation

Three results, one refinement of F122. (1) REFUTATION: trimming the SELECT hold 31->2 frames produced a BYTE-IDENTICAL run (same death frames, same $99=8) — and $99 is 8 from FRAME 1, before any input.

Raw traces, ROM material, local paths, and personal data are not part of this public record.