
When magistrate judges are referred a dispositive matter, they issue an R&R that goes to the district judge. In Delaware, an R&R typically notes the objection period at the end, and the losing party typically (but not always) files objections.
When magistrate judges are referred a non-dispositive matter, they issue an order (and possibly an opinion). The order typically does not mention any review period or process for review.
What parties often forget is that you can object to a magistrate judge's order just as easily as you can to an R&R under FRCP 72. And, in fact, the District Court …