Here's my opinion on season 6 episode 6 episode:
Ok. Some spoilers may follow. So don't read if you don't want to be spoiled.
You have been warned.
So Daryl doesn't exist in the comic book series. But there is a character that wields a crossbow. And his name is Dwight. I believe that the guy and girl on the episode that stole Daryl's crossbow is Dwight and Shelly from the comics. And they are characters that are affiliated with Negan. Which is even badder than the Governor. And my thoughts on Glenn is that he will be back. Negan beats Glenn to death with a bat in the comics. I believe that by the end of the season we will see Negan (he was already announced to make an appearance on season 6 finale in April). And instead of killing Glenn to death with his bat he will either kill Maggie or Daryl. I'm just hoping Maggie has the baby before she gets the bat. But again. This is all just my opinion.