In the DC comics, Steppenwolf is the uncle of Darkseid. However, their relation was not made clear in the Justice League (2017) movie. I've read many CBR articles, as well as several other sources, several of which contradict each other about it. A few claimed that their relation is the same as it is in the comics, and a few claim that it's just the opposite. Did they ever clarify their relationship in an extended medium from canon or in an interview?
Note: I'm aware of a similar question on Science Fiction & Fantasy, which didn't get a satisfactory answer for my question.