I have a ton of credit with Key Bank. At any point, I called in to request a CLI on my Cash Rewards that I've had for a little over one year without any increase. Went through the proper screening and the rep said it would be a hard pull. I agreed based on previous CLI on other Key Bank accounts without a HP. Came back with an instanct CLI of $2,500. Total limit now is $10,000. I have 7 HP's on EQ for 2020. I verified on my Equifax credit monitoring that it was indeed a SP and not HP. They've never been inquiry or new account sensitive to me. They do appear to want to see usage on the card for the past 6 months though. I've gotten the following accounts over time with them in quick succession:
Cash Rewards 10k
Key2More Rewards 12.5k
Key2More Rewards 12k
Lattitude 30k
Lattitude 14.5k
LOC 28.5k
Signature Loan 20k
(Formerly known as: Credit is my hobby (1.7M)/TCL objective)
Congratulations on your CLI!
Pretty good relationship overall with Key, grats on getting the CLI 
