These are genuinely some of my favorite episodes in the series, I love these pairings. Having

be the one with

and having to face down the enemy herself was really cool, as mentioned it's not something they really did much, and

and

being the 2 to actually get to face Nehelenia themselves was also really cool, it was nice seeing more of their friendship and

actually getting to show off some attacks was great,

and

was really fun since despite

having interactions/episodes with all the inners at this point it was the first really with

and made an interesting pair.

and

was super fun in general to me, they played off each other insanely well and are actually a lot more similar than would first appear and I love that the eps highlighted that as well as their differences, it was especially nice since

was sorely lacking on this sort of thing compared to her girlfriend so it was nice to see her get some time and interactions with one of the inners
Rambling (I love these episodes I could go on all day tbh lol) but to answer my favorite was

and

, I don't think

being the leader of the senshi is brought up much in the anime, if at all before this, so seeing that and her philosophies on that role highlighted was super interesting, especially when paired with

, who above anyone else I think was sorely lacking dynamics with any other character in the series, and this did a great job fleshing her out for me. It was almost the opposite of the normal "outer teaching inner" schtick since it was more

teaching her that all of their lives matter and that she's more than just her role as the time guardian, it's ironically parallels PGSM Minako's role.
Rambling hard but I loved every bit of these episodes, and my biggest hope if we ever get more completely original material is more stuff like this, go wild with the pairings, have

and

compete in a beauty contest. or

teach

and

how to bake. or

spend the day with

for some plot reason, just have fun with the characters and it'll flesh out the ones that could have used it a bit in the process lol ^^