There was only one dream sequence (going from memory) and I think that was just Bruce's fear of what would happen (though the fly mosquitos was a bit weird, maybe he thought more aliens would visit).
But the bit after it was The Flash and it felt a bit disjointed and out of field. BUT if they tie this into the Flash movie (like a flashpoint paradox-type scenario) then it would be an amazingly good tie-in and would make the whole collaboration of one universe that much better, but if they just forget about it. It's a failure.
Both the Flash and the "mosquitos" (forget their real name) were dream sequences, and both are future events. At this point he has no idea who or what the Flash is, and the mosquitos are part of the army Luther references: "the bell has been rung; they know we're here...they are coming..." Both are cases of foresight.