# UTFANSWF v22 — Cross-Layer Acoustic/Distance Coupling Test

**Context:** DIAGNOSTIC_NON_GATING

## Coupling

| Quantity | Value |
|---|---:|
| late-distance desired transfer | 3.302460 |
| BAO H guardrail cap | 0.447459 |
| applied coupling | 0.447459 |

## Residual transformation

| Node | Before | After |
|---|---:|---:|
| r_ell_A | 3.142651 | 2.695192 |
| r_H_BAO | 0.447459 | 0.000000 |
| r_D_M_BAO | 0.000000 | 0.000000 |
| r_SN | -2.450746 | -2.003288 |
| r_SH0ES | -4.154173 | -3.706714 |

## Metrics

| Quantity | Value |
|---|---:|
| RSS before | 5.774061 |
| RSS after | 5.001695 |
| RSS improvement | 0.772367 |
| chi2 before | 33.339784 |
| chi2 after | 25.016950 |
| chi2 improvement | 8.322834 |

## Tests

- late_distance_mean_used_as_desired_transfer: True
- BAO_H_guardrail_cap_applied: True
- no_guardrail_break: True
- rss_improves: True
- chi2_improves: True

Score: 5/5
Verdict: cross_layer_coupling_supported_but_guardrail_limited
