Google and or Quora seem to be aware of my TOR browser searches

I occasionally use TOR onion browser to search sensitive topics that I don't want associated with my personal google account. I also subscribe to Quora and get emails to my gmail account at least once or twice a day from Quora with various interesting subjects.

A couple of days ago and yesterday I researched a sensitive topic on TOR browser and read through a few quora Q&As. All my browsing activity was restricted to TOR browser. Today I received 2 …

account aware browser don emails gmail google google account onion personal privacy quora search searches sensitive subscribe topics tor tor browser