A gruelling 30+ minutes of non-stop technical pop quiz questions and scenarios directly asked without reference to any material. Indeed, this is bread and butter for your avid FSD, but to speak it through textbook verbatim was like coding in notepad.
This was considered conversational, but felt more a probing by border force. There was little in way of encouragement in providing the correct response, making me often second guess myself, and no interest in all the skills that surround a senior developer, such as project management, agile methodologies, team leading, effective communication and planning and initiative, and was very much focused on tech.
I got the impression they pretty much decided they wanted Copilot rather than a thinking human with industrial knowledge, experience and any ambition, and I likely wouldn't be very happy being ground into dust by the pressures of working solely on a high expectation, low patience type project.
It got to the point where I was recalling the process of an API I had developed rather than directly answering the original question being asked, then confusing the authentication methods of user token based and public private key based. The interview kind of nose dived a little, but I got most technical questions correct.
Once the ordeal had completed, I thanked them for their time following their lines of questioning, but never got any feedback following the interview.