Im actually doing it right now. Im doing work etc on computer so not paying too much attention (have two screens). I think itll take about 6 hours total, but you can break whenever you want and start another day.
There are three ways they make sure you are "paying attention". First they ask you some personal questions they asked at start, you must click in multiple choice. Second every so often they will randomly pop up a text box that you must type in a word. Third, and most annoyingly, after each frame you must hit continue, and the button is not clickable from between 0:15-3:15 depending on the frame. Also they have ~4 minor exams throughout the test but you have bigger issues if you can't pass them without paying any attention
