Kinematics and [O III] and Hα line emission in LACES104037 and the companion LACES104037-S. The Redshift is masked to only include spaxels where S/N([O III]) > 3 and the line fitting successfully converged on a solution. This map shows that LACES104037-S is close to LACES104037 in velocity space and most likely an interacting companion. The circle shows the approximate location of the escaping LyC, and the black contours in the redshift map show stellar continuum levels from the right panel in Fig. 1. The question mark in the left panel indicates a faint possible third interacting companion.