I didn't have the impression they were planning to do anything together. They were just talking about what plans each might have for the weekend, and neither had any.
CARTER
How about Monday morning?
O'NEILL
No, I have a thing with someone from CIA. A Johnson someone or other. It's about
that whole Kinsey thing.
CARTER
So, any big plans for the weekend?
Don't the first two sentences imply that they were trying to make some sort of appointment before segwaying into discussing week-end plans?
The only other time anything remotely like this came up was in "Lost City" when Sam showed up at his door and said she couldn't sleep the night before, and Jack said she should have called him. I always wondered when he or they had gotten so chummy that one would call the other in the middle of the night because they couldn't sleep.
I interpreted Jack's offer there as similar to the regular fishing-invites:
Jack: "You know you can always rely on me for help if you really need it"
Sam: "Yes, but we both know I'm not going to ask you for it"
or something to that extent.
(P.S. I am usually smacking my head metaphorically, especially after I got the little scar in the middle of my forehead by accidentally smacking into a stage beam)
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