Only thing that bugged me about the AT cameo was CN used it in the promos and you can guess what confusion that sets up. Yeah, SU is back on the schedule (yay), but AT is sadly not.
Anyway, this episode proves why this show is so adorable. The Bears have trouble fitting in with the humans, but they have a best human friend in Chloe. So seeing them try the same techniques that failed them on Chloe is a perfect mix of kinda cute, kinda sad, and kinda funny. Griz's mature adult party was delightfully wrong on every level, and I loved how Ice Bear kept insisting Chloe was much older than she looked. Considering he's the chef of the group, the "Happy 50th Chloe" cake was clearly his. And you gotta love how Panda draws anime like a white person.