We present the results of H - and K -band VLT/SINFONI integral field spectroscopy of the ULIRG IRAS 19254 - 7245 ( The Super-antennae ) , an interacting double galaxy system containing an embedded AGN . Deep K -band spectroscopy reveals Pa \alpha arising in a warped disc with position angle of 330° and an inclination i = 40 - 55 ° . The kinemetric parameters derived for H _ { 2 } are similar to Pa \alpha . Two high-ionization emission lines , [ Si vi ] and [ Al ix ] , are detected and we identify as [ Ni ii ] the line observed at 1.94 \mu m. Diluting non-stellar continuum , which was previously detected , has decayed , and the H -band continuum emission is consistent with pure stellar emission . Based on H _ { 2 } emission line ratios it is likely that at the central 1-kpc region H _ { 2 } is excited by UV fluorescence in dense clouds while shock excitation is dominant further out . This scenario is supported by very low Pa \alpha to H _ { 2 } line ratio detected outside the nuclear region and non-thermal ortho/para ratios ( \sim 2.0 – 2.5 ) close to the nucleus .