@kyrat wrote:
Somewhere between "Darkling" (2 episodes back) and this episode, Kes apparently grows 2-3 years worth of hair? That made the time travel part even more confusing... I assumed she was starting at a more future point due to her much longer hair.

Or she just "let it grow" instead of regularly trimming it. What's "2-3 years worth of hair" to a species that only lives 9 years? Human hair growth speeds would be irrelevant to a non-human.

@Tinalessia wrote:
why is this a part 2? Doesn't tie in with last week's episode...

Part 1 was on the original Law & Order. It's a crossover.
https://www.tvmaze.com/episodes/3181179/law-order-24x19-play-with-fire-part-1

The "guardian angels" are just annoying. Unfortunately it's not a skippable episode like most throwaway holiday episodes.

Fox cancelled Lucifer. 3x25 and 3x26 were recorded for season 3 but got held for season 4. Since season 4 wasn't happening, Fox burned the two episodes off one night after the season was over.
Netflix brought Lucifer back for seasons 4-6, but that wasn't decided until after these aired. 

So these are official "bonus episodes", just not in the planned order.

That's why they don't make sense with the continuity considering what happened with the actual season finale of 3x24.