How do you get to Lower Silesia from Kraków at night? Just get IC Przemyślanin right? Wrong. Actually that's what you should get if you live in Wrocław, but no one wants to be stuck on fucking Wrocław Główny at 2am.
So instead what you are gonna do is you get IC Malinowski to Warsaw, and then transfer to IC Karkonosze, which will get you as far as Jelenia Góra (in my case Jaworzyna Śląska at 5am, and then a connecting D64/D91 to Świdnica)