**possible plot spoiler**
I liked this chapter immensely, I felt Jack's fears and doubts made the whole story more grounded in reality.... Transition from a nearly surreal hyper-existence, living intensely on a knife's edge at all times - to a life filled with ordinary everyday events - and with time for reflection and introspection.
I admit I have been struggling more than a bit with the plot point of Jack and D not meeting up again for 3 years (which I think has been mentioned previously in Lori's comments) - because I thought the reason for this would be that D would be unable to locate Jack given the Witness protection thing. And I thought that was a real stretch for me to believe in - when they could easily enough have agreed some way to get in touch, or D could get info via Churchill or Megen, etc. I also struggled with believing in any significantly increased risk of the brothers finding Jack even if he and D were meeting up and staying close, which had previously also been mentioned as a reason for the two of them to not get in touch and to stay in the dark about each other's whereabouts.
This chapter totally removed my issues with their staying apart, I don't have to suspend disbelief anymore, - as this gave me a reason that I could believe in, one that made complete sense both in terms of D's character and the plot. I totally bought D's note and his inability to face meeting up with Jack only for them to part again. Given the intensity of his emotions and loss of control on display in that horrible last scene with Josie I can see how D believes - or fears - that meeting Jack again would destroy his ability to keep his emotions under lock and key once and for all, thus making it impossible to focus single-mindedly on his goal - which ultimately is worth it to him missing Jack for a long period, as it's all about giving Jack his old life back in some sort of atonement.
Zero keeps surprising me in the best way: Chapter upon chapter presents some (or much!!) development I wasn't expecting (ie. in this one; Jack's courageously clearly-voiced and numerous insecurities, doubts and misgivings, including those concerning D's shady hitman character past), but once I've read it, I just can't see at all how it could have been any different! That's really good writing - the best!!