it looks like what's going on is these are double episodes. So it will kind of have two sets of credits at the beginning, only if/where the credits differ between the two episodes. So, for example, the won't list the actors twice, because it's the same actors appearing in both episodes. But if the second episode being paired with the first has a different writing credit, or a different directing credit, from the second episode, then there will be two sets of credits there.

So, when you start up the show, and it shows double-credits for a few things -- that episode is two hours, right? (Or an hour and forty-five minutes, or whatever.)

Back when miniseries were a thing credits like this used to be commonplace.

That was a long time ago though.

Or -- to be more clear -- if there are episodes with two sets of writing credits, followed by an episode with no writing credits, it would be because the episodes originally aired in pairs. And that might not make sense now if you're watching it later, on streaming...