The time evolution of the reduced and template-corrected spectra for HIP 67522 spanning observations on 2023 February 28 UT. The observations occurred 1 day after the predicted transit of HIP 67522 b, resulting in a planet-less series of observations. The color bar shows the time of observation relative to the simulated midpoint of the transit had observations spanned the actual predicted transit time. The line in red denotes ingress of the actual transit time +1 day. The vertical dashed lines mark the region used for the in-transit feature.