Classification of an SEP event on April 20, 2022, based on the magnetic connections of the space craft considered in this study relative to the flare location. The green, pink, and orange sectors are the sectors of well connected, poorly connected eastern, and poorly connected western events, respectively, with reference to the flare location. The spiral magnetic field lines passing each spacecraft location are indicated by different colours and numbers. L1 (black/number 5) is well connected, and Solar Orbiter (blue/number 4) and Parker Solar Probe (purple/number 3) are poorly connected in the sector of eastern events. BepiColombo (orange/number 2)) and STEREO A (red/number 1) are poorly connected in the sector of western events. The figure is produced with the Solar-MACH tool (Gieseler et al. 2023).