No the 2 hours is their time limit for candidates. The thing is that you are allowed to use any non-human help for their take homes (open book), so if AI can solve it in below 2 hours, it's not very good at assessing the human.
4 hours but AI help is (was?) allowed. I assume it was retired because of Opus basically oneshotting it
4 hours but AI help is (was?) allowed. I assume it was retired because of Opus basically oneshotting it