I only upload videos and then work from the transcriptions.
That's my understanding of currently functionality too. I don't think Dovetail is where the interview is hosted.
I know Dovetail has a recruit feature is beta, but I've not used it so I'm not sure how it might integrate with Zoom or Google Meet etc
A few other tools are moving in that direction (making notes during the call; the discussion guide is embedded into the project + call) but personally, I find it better to give the participant my full attention while taking notes with a physical note book - then reviewing afterwards.
Deep, slow thinking is underrated!