Quiescent-flux-subtracted spectra for EVRT-3586872 at +69 and +145 minutes from flare peak. Near the secondary peak at +69 minutes, Balmer continuum and “conundruum” flux, potentially higher-order hydrogen series, dominate the excess emission, decaying to a mostly thermal spectrum at the end of observations. The shaded region indicates the window regions used for calculating the relative contributions of nonthermal emission.