We test the distance-duality relation \eta \equiv d _ { \text { L } } / [ ( 1 + z ) ^ { 2 } d _ { \text { A } } ] = 1 between cosmological luminosity distance ( d _ { \text { L } } ) from the JLA Type Ia supernovae compilation and angular-diameter distance ( d _ { \text { A } } ) based on BOSS and WiggleZ baryon acoustic oscillation measurements .
The d _ { \text { L } } measurements are matched to d _ { \text { A } } redshift by a statistically consistent compression procedure .
By Monte Carlo methods , non-trivial and correlated distributions of \eta can be explored in a straightforward manner without resorting to a particular evolution template \eta ( z ) .
Assuming independent constraints on cosmological parameters that are necessary to obtain d _ { \text { L } } and d _ { \text { A } } values , we find 9 % constraints consistent with \eta = 1 from the analysis of SNIa + BOSS and a 18 % bound results from SNIa + WiggleZ .
These results are contrary to previous claims that \eta < 1 has been found close to or above 1 \sigma level .
We discuss the effect of different cosmological parameter inputs and the use of the apparent deviation from distance-duality as proxy of systematic effects on cosmic distance measurements .
The results suggest possible systematic overestimation of SNIa luminosity distances compared with d _ { \text { A } } data .
When interpreted as an extinction correction due to a gray dust component , the effect is broadly consistent with independent observational constraints .