-I was a bit confused on how long Guy's been a Lantern. Wouldn't Carol have known about another GL flying around, and mentioned it to Hal? Since the Guardians were so enamored with Guy, that suggests he's been a GL for a pretty significant period while Jordan was away.
Carol didn't have a lot of time to talk to Hal before he got called away, and they had more urgent personal matters to talk about. Basically it was just "Hi, honey, I'm back from saving the universe!" "I missed you, but you're fired. What if you're gone longer next time?" "I won't be, but -- oops, crane disaster, gotta go, we'll have dinner!" Where are you gonna fit "Oh, by the way, there's another Green Lantern who took your job" in the middle of that conversation?