Spacecraft configurations (top panels) and SEP intensity profiles (bottom panels) for the two case study events 2021 October 9 (left) and 2021 October 28 (right). The spacecraft configurations are from Solar-MACH. The colour-coded circles indicate the spacecraft locations and nominal Parker spirals calculated from measured solar wind speed at the spacecraft. Multi-spacecraft SEP intensity profiles for the proton ∼ 25 MeV channel were made using SERPENTINE tools. The 2021 October 28 event decay is cut off by a second event that occurred on 2021 November 1.