CO(5–4) maps in 178 km s^-1-wide channels. The SE galaxy is strong at −44 and +133 km s^-1 (middle row, center and right panels), while the NW galaxy (upper right of each panel) has a main maximum at −222 km s^-1 (left column, middle panel), and a weaker plateau extending to positive velocities, notably in the panel at +489 km s^-1 (lower row, middle panel). Contour steps are 0.34 mJy; 1σ = 0.25 mJy. The cross in each box marks the position of the 1.3 mm continuum from the NE galaxy (Table 1). Velocity offsets (upper left corner of each box) are relative to 101.190 GHz (z = 4.6949). The beam is 1.6″ × 0.7″ (black ellipse in bottom right panel).