Solid lines show angular dispersion of the sink particles relatively to the mean angular direction, with each colour corresponding to a different simulation. To only consider relevant sink particles, we selected the ones with masses over 0.07 M_⊙. In comparison, the dotted lines show the angular dispersion of a set with the same cardinality as the set of sink particles at each time step, exhibiting random angular orientations. For times longer than 2 Myr, the angular dispersion in the simulations is significantly lower than for a set of random orientations, implying that the sink particles have a preferred angular direction.