Lol, wrote these headcanon ideas before knowing the comic.Keeping them up there though.

Portal 2: Headcanon - Chell is clueless with her new found freedom.

Portal: Headcanon - By the time the Morality Core was finished, 95% of all the workers already died. They were already down to the last few minutes of their lives. Hence, that core does not talk and doesn't seem to do anything else but maintains her robotic voice and prevent her to fill the lab with neurotoxin. By the time the core was added onto GLaDOS, maybe one or two people survived if any.

Portal: 2 hours for test chambers 1-15. 3 hours multitasking with the chat. 1 hour for a stupid button I failed to recognize. Another (1) hour to use that button correctly. 1 hour for walkthrough when stuck. 9 hours for panicking about turrets and running out of time. Sounds about right.