Pretty standard start, not sure why all the confusion.
That pit was so filled up, it would get louder and louder, drawing more walkers near Alexandria. Their plan was to draw them all out of that pit miles and miles away. And it was working, til the horn.
They made it look like a new threat is honking the horn, they prolly want us to think its the Wolves. It might be, or its others left in the community that sounded it for help. Stragglers might have got in, Carol and Corral weren't enough to hold em off, so someone sounds the horn.
Loved what Maggie told Tara about bein on opposite sides of the fence, and now family. Glenn will convert that douche into a good soldier.
Morgan seein right thru Carroll.
Thought it was a great start. Upped the scope, the aerial shots, largest hurd we've seen, the increase in humor, more characters, Alexandria is lookin 50 deep or so now. And we know the Wolves will be here shortly. The recap, and Rick/Daryl's convo forecasts it.