A single specific streamline of gas flow from m005 run at t = 10. The sphere in this figure represents the Bondi sphere of the planet. The blue solid line indicates the streamline which enters at the zenith of the Bondi sphere of the planet and circles around the planet several times, finally exiting near the midplane of the disc, which is coloured light blue. For convenience when plotting a streamline, the inflow point is located at (x, y, z)= (0.001, −0.001, 0.05), which is slightly different from P₁ = (0, 0, 0.05; see Sect. 3.3).