Here are all of the questions and answers related to Hannah from that thread:
Q: Based on episodes 4-6, are the new characters/actors, Isaak and especially Hannah (since her appearance was so promoted) making a good impression so far and are their stories going in the interesting direction
A: Siemon - Absolutely! It feels like Episode 5 is the beginning of Act 2, and there's definitely some interesting story developments and new characters down the road.
Q: Was just wondering though when Hanna will start playing a more prominent role. From your description, it doesn't sound like she's really part of the focus in episode 4, just wondering if this changes by episode 5 maybe?
A: Floppypig (love your handle - Lol!) - We get a little more screen time with Hanna in Episode 4, but her character begins to really kick into gear in 5

. And yes, that Yvonne is one pretty gal for sure!
Q:This has to be one of the weirder questions. Hanna. Any Chuck fan has probably fantasized about this. Do we get to see the lovely actress of Hanna/Sara Walker bare flesh?
A:
JBryden - Haha! I wasn't familiar with the actress before, but I was hoping the same thing after I saw her. Lol!
Unfortunately, nothing worth mentioning...so far

Q: There was a clip of Hannah and Dexter in some sort of Christmas setting and Dexter seemingly had his "needle" face on, behind Hannah. She getting tabled early in some manner? (I know she won't die if that does happen, but I'd be unexpected to get there so early)
A: You'll have to wait until Episode 6 to find out
Q: Question. Does episode take place on Christmas? And if so, does the remainder of the season take place over one week?
A: Nope, it doesn't take place over Christmas. In Episode 6, there's a Christmas-type display but it's something that's year round.