Did someone at Chase tell you this? If the retention offer has a spend requirement, how does Chase differentiate the taxable status from a new account bonus?
Of course not. Chase 1099 team people knows jack basically, from the hour long conversation spent with them yesterday.
I took the time to peruse various reportings on the net - DoC's site being the obvious, Reddit has a Mega 1099 2023 tax year thread - the retention offer of statement credits Chase gave out, actually were 1099ed since last year.
I have never read any Chase retention offer that requires the cardholder to put in any spend. Since this IS Chase forum, Chase retention offer thread, I dont think anything AMEX offers, do not merit a discussion here because it simply muddles the issue. Not until Chase attached conditions to retention offer, we should assume the retention offer in the form of statement credit, or points (very rarely), are 1099 materials.
If you want to know more, there are DPs on some SUBs also got 1099ed by Chase - namely, the $300 GC + 40K Marriott points, the $200 GC of an AMZN card, to name the 2 I remember coming across in my reading.