In the last stream, I have noticed a fairly interesting bug/error with the Talent2 that you can see most clearly at about 1:34:20. At that moment Matt flies with a camera around the consist and the first unit features two pantograph cars (and therefore two first-class sections). Br 442 always has only one such car even in its longest variant. I don't know if that's only in this mission or in all double unit trains (the second unit is correct), I just wanted to mention it here on the forums.
I have no idea, how difficult this might be, but TSW still uses consist building in a relatively normal way. So basically the double unit consist should be something like ABCDABCD, but here it's ABCAABCD. It might not be that hard to fix, but I guess we'll see.
Yeah, I haven't seen it in the training neither, but I don't know if it wasn't just the specific timetable Matt drove.