He I spectra that sample three orbital phase intervals near periastron after removing light from the brighter star. Each spectrum is labeled with the night in 2022 on which it was recorded, in the format MMDD, where MM is the month, and DD is the day of the month. The orbital phase of each spectrum is shown in brackets under the date of observation. The character of the He I trough changes with time in all three phase intervals, indicating cycle-to-cycle variations in the medium in which the He I trough forms. There is also evidence for line splitting near the trough center in the middle panel, and this is attributed to flows in the envelope that are driven by variations in the tidal field (see the text). He I emission become evident in the right-hand panel.