Rotation curves calculated along the major axis of the HZ10-E+HZ10-C complex using independent apertures. Data points correspond to the velocity centroids (left panel) and velocity dispersion (right panel) of a single (green squares) and double (blue and red crosses) Gaussian fit of the spectra within the circular apertures of radius 0.13″ as a function of the relative aperture position. Apertures were placed along the major axis with a step of 0.26″. Zero velocity is calculated for the rest-frame [C II] frequency at z = 5.6548. Zero offset corresponds to the aperture position at the same zero point as for the respective PV diagram. Aperture positions where the HZ10-E component impacts the spectra are shown with shading. Black curves represent the best-fit disk model from DysmalPy analysis. Normalized residuals represent the difference between data points and the model, divided by the data uncertainties.