Circular velocity profiles centered on the primary BH’s position for runs NAC (top-left), CSF (top-right), CSFSN (bottom-left), and CSFSNBF (bottom-right). The red vertical line indicates the radial distance, projected on the disk plane, of the secondary BH from the primary one at t = 30 Myr, whereas the shaded region indicates the range of such distances during the first 30 Myr.