OP, you might want to periodically check your CL online to see if it was bumped. It should show immediately when the decision is made, instead of having to wait for the intern to print the letter, fold it, handwrite the address, lick the stamp, and drive it to the post office (just kidding). Most of the 10 days is snail mail processing.
I just got a hp cli from us bank that took 2 days to happen, because underwriters had to review the request. Maybe that is what us happening here.
US Bank likes to review everything. Sometimes they will intentionaly overide your original request. It got so rediculous that they no longer ask how much you want and just set your new credil limit as high as they can get approval for.
TU:795 10/08/18 Synchrony--EX: 758 10/26/18 Discover--EQ:810 09/25/18 Citi--Gardening since 12/11/19Active: Bank of America (Better Balance Rewards M, Cash Rewards WM, Cash Rewards VS), Blispay V, Capital One (Quicksilver VSC, Walmart WMC), Chase(AARP VSC, Amazon Prime VSC, Freedom VSC, Slate VC), Citi Dividend M, Citizens GreenSense M, Discover It, FedEx Employee Credit Association V, FNBO Ducks Unlimited VS, PenFed Platinum Rewards VSC, Synchrony Bank(PayPal Credit, PayPal 2% Cashback M), UMB Bank Simply Rewards V(Milford Federal), US Bank Cash+ VS Wishlist: Bellco Colorado Rewards, EBates, Marvel, Nusenda Platinum Cash Rewards, PenFed Pathfinder, Security Service Power Travel Rewards, Vantage West Connect Rewards, Wells Fargo Propel