PV diagram of the CO emission (in mK) centred in α = 13^h26^m15^s, δ = −42:49:00 over the same slit orientation as Oosterloo & Morganti (2005) with a width of 4.2′ (taking all the CO emission). The blue lines represent the H i cloud velocity gradient. The dashed line represents the continuity of this velocity gradient over the CO emission. The position of the radio jet is shown by the vertical black line.