ARG0000xqx - overlap? or lens
Is that an overlap or there could be possible lensing? Personally, I think it is an overlap
Has z_sp = 0.071
Nearby, SDSS J115616.89+435512.8 has z_sp = 0.133
I think it's more likely an #overlap than a grav lens; the morphology of the blue object is not like that of a lensed galaxy IMHO.
The spectrum of the blue object has lots of lines/features of the foreground galaxy, particularly the absorption lines H&K, G, Mg, and Na D.