I got one on Freedom when it was maybe 4 months old. It went from $8k to $11k
No clue why, there's always been very little spending on it.
CSP has not seen any increases and it's stayed at $16.7k, and that one has seen quite a bit of usage relative to the limit before I sold my soul to US Bank.
If anything, I would have been a whole lot less surprised if CSP got the CLI
DW has three Chase cards...one for six years, one for four years, and one brand new... we've never seen a CLI on any of them.
I've got two, and can't remember how long I've had them, but they've never seen a CLI either.
I've been averaging a spend of ~125% of my CL on my FU each month and PIF. It's on it's 4th statement period now, so hopefully I'll get a CLI one of these days!