A stand-alone tangent yes. But based on how Chapter 13 ended, it was a lovely look at David's relationship with his sister, and various possible outcomes, based on choices made and not made. So well done, filmed, written and acted. Dan Stevens and Katie Aselton were awesome in this episode, epic-like even.
So why did we have to wait for 5 and 6 for things to get back the the quality of Season 1? Will be interesting to see if they stick with this level of intensity or return to the campy-ness that was Chapters 9-12. The entire season deserves needs to be on par with these last two episodes and sadly the first 4 weren't.