Summary of the PSP and SolO observations between 27th and 28th September 2020 when both spacecrafts have been magnetically connected to the same coronal hole. Top: synoptic map produced by the connectivity tool (Rouillard et al. 2020) overlayed on a ADAPT/GONG magnetogram, and on a STEREO-A/EUVI 193 Å Carrington map. The map is obtained for Carrington rotation #2235. Left: red cross shows the PSP sub-spacecraft point, and the red circle shows the PSP expected footprint along the magnetic field line. The connectivity is calculated for the time interval indicated by the pink band in the bottom panel. Right: same details as in the left panel but for SolO. Bottom: radial proton velocity and the radial component of the magnetic field measured by PSP (left) and SolO (right).