I'm doing live demos either in-person or on video calls. The Unicorns/FAANGs doesn't give a damn. Heck, some don't even give you the space/time to do such demos. 10 minutes behavioural grilling, and then 45 minutes algorithm puzzles. 5 minutes left for you... Shouldn't be called an interview. Should be called it what it is, a straight out standardized exam.