Okay worked way too much on a not too exciting thing but it's my airport sooo. I asked why the ATCs seemed overly cautious to my eyes in the sky and they said

UA350 diverted back to EWR 23:17z, or 19:17 local time
Landed 23:17z, declared emergency 22:47z

So I went through the ATC archives, four different audios, three different frequencies and put it all together. Here it is.

#ChillyATCAdventures