I think it's from the PoV of humans, as the whole chapter deals with what seems "delaying". In Daniel 10:20 Alexander the Great's arrival is called "soon" after Cyrus - that's a bit more apocalyptic. If you look at the Bible's contingents versus reality you see the same thing: the numerous threats against Israel by God compared with for example Malachi 3:6-7 where God tells the wicked Israelites He knows He won't destroy them because of the remnant (Mal. 3:16-18).
Think of it like this: Mercury spins around its axis very slowly. If you're on a spaceship that doesn't move, you'd see Mercury spin around its axis 3 times every 2 of its years (=1.5 days/year). But if you're on Mercury, the Sun would rise and set until it rose again only once every 2 of its years (=0.5days/year). The reference frame is always important. That's why from our point of view, Scripture says sometimes that "God was grieved and changed His mind," etc but in other places it says that He never changes His mind. If I take away video games from my child while he's misbehaving, knowing that he'll stop and I'll give them back, I'm only changing my mind from his point of view, and it's a real change, but not with respect to my own mind