Zoom-in of Fig. 1 showing two extended partial crossings of the HCS before the complete crossing at HCS 2. The parameters in panels a–i are the same as in Fig. 2. In panel c, the red traces are the Walén predicted V_R, computed starting from both left and right edges of each partial crossing, and ending in the middle. The magnetic structures shown in panel j is adapted from Daughton & Karimabadi (2007) kinetic simulation of reconnection, and serve as a sketch to illustrate the effective trajectory of PSP skimming and partially penetrating into thick and blob-like structures in an antisunward exhaust, before fully crossing a thin sunward-directed exhaust on the other side of a dominant X-line. The simulation domain is three orders of magnitude smaller than the PSP context.