There has been a misconception that Sri Adi Shankaracharya was a Vaishnava, and that this can be inferred from his Bhāṣya corpus. This is 2-part video (of which part 1 is uploaded here https://www.youtube.com/watch?v=fQi3LkrZ74E • Is there popular Vaishnavism in Shankara Advaita... ) sets at rest such a thinking by providing appropriate evidence from the very Bhāṣya sources.
Part 1 features Insights from Brahmasri Dr. Jammalamadaka Srinivas ji
This video, Part 2/2 features highlights from Vidwan Marella Kirthi Chandra.
The following two articles capture the points presented in this video: