In the cold? Like they didn't even break for lunch or go back to their trailers at any time during that 15 hours?Not to defend, because I thought the cliffhanger was an incredibly weak way to go, but JDM did say on TTD last night that while they were filming his scene that they had all of the other characters stay in position and in character the entire time they were filming, even when the camera was just on him. Normally shows use stand-ins in those types of scenes. He said the entire cast stayed worked up in their characters emotionally and physically for the entire 15 hours to shoot the scene (in the cold), and that it totally drained them. So I can see where Cohan's comments could be coming from, if that's what she was talking about.
As far as Lincoln, nothing in that script would have kept me up for more than a minute or two.
Seriously, I get what you are saying, but I still think it was all fodder for publicity. With anything said on TTD being the worst of all the fodder.