This episode was very nice all around. Noibat is incredibly adorable, and will no doubt be a favorite among fans for some time.
Besides the fact that Noibat was hatched, Hawlucha shined hard in this episode. Not only did it find the egg, but it also actively helped to teach Noibat how to fly and helped it escape from TR after they were netted by them. (Of course, him knocking off the Noibat-themed ear plugs from TR's ears in the dark with the assistance of Noibat's sound waves was hilarious). For those that are doubtful about Hawlucha's character development since forever, perhaps its battle in Laverre City Gym, its part of the battle vs Shota, and its role in today's episode will hopefully change your minds - it has grown by leaps and bounds ever since it joined Ash's team.
Of course, not going to forget Fletchinder - not only did it help accelerate the hatching process with its now-confirmed Flame Body ability, but it also helped teach Noibat how to fly.
And shoutout to Pumpkaboo and Inkay for attacking TR at the cave's entrance thinking that they were Hawlucha and Noibat - you guys are the real MVP.
Overall, this was a well-rounded episode. Most of Ash's Pokemon got at least decent screentime doing some relatively great things, and Noibat is no doubt a great addition to Ash's team. Can't wait to see how that little guy develops (especially in the next regular episode).