top: The average LBT/MODS spectrum of J005311 with several of the O VI emission features identified (Gvaramadze et al. 2019). Narrow interstellar/circumstellar absorption lines due to Na I and Ca II (H+K) are also visible. bottom: Changes in the O VI 381.1/383.4 nm emission profile over the ten individual exposures from the two telescopes. Each major epoch are shown shifted in the y-axis by a value of 0.1. The times for exposures from MODS1 and MODS2 differ by one minute and are plotted together and the mean UT of their exposures is shown at the right. The plausible motion of two wind subpeaks is indicated by the dotted lines.