Remember this advice isn't official. There is no guarantee it will reflect your experience because university applications can change between years. Check the official Cambridge and Oxford websites for more accurate information on this year's application format and the required tests.
Also, someone else's experience may not reflect your own. Most interviews are more like conversations than tests and like, any conversation, they are quite interactive.
At the first interview we went through various aspects of my personal statement and discussed issues around the moral responsibility of literature (which I had written an essay on). There were quite specific questions asking me to quote from things but when I said I couldn't remember a specific quote that was okay. At one point I was given a passage from something I'd read and then we discussed it. The interviewers made me feel really at ease.
The second interview began with a close discussion of a part of the poem that I chose. Then we discussed the poem as a whole and things around that.
My school were very helpful and organised a couple of
Nothing to add!