Proton dynamic spectrum (upper panel) and time-intensity profiles (lower panel) for the 2022 June 7 event observed by STEP, EPT, and HET on board Solar Orbiter. The curved dashed line in the upper panel represents the onset times fit. The colored vertical lines in the lower panel indicate the onset times for each energy channel. The vertical solid line marks the CME eruption time, and the vertical dashed black line denotes the release time derived from VDA.