Comparison of the spectroscopic and SA profiles of CQ Tau observed in 2021 (black), 2022 (blue), and 2023 (red). The horizontal bars are scaled to the instrumental resolution of each observation. A narrow emission component persists in all three epochs, though its line/continuum ratio varies. The centroid of the PSF of the narrow component is extended when the slit is 47° east of north (2021 and 2023) and disappears when the slit PA is 137° east of north.