Blow up of Fig. 6, focusing on smaller heliocentric distances. Path length S₀ for a large-scale field line from the global solar wind simulation is compared with two computations of path length of random-walking field lines (see caption of Fig. 6). The orange vertical line indicates the approximate radial position of PSP at the time of the events depicted in Fig. 8, and the brown horizontal line depicts the path length derived from the dispersion analysis of these events, shown in Fig. 9.