Required Minimum Distributions (RMD)

I reached age 72 in late 2021 and was therefore subject to the RMD from my thrift savings plan.  I have been getting monthly payments from this account but didn't bother to calculate what the minimum requirement would be for 2021.  The fund managers informed me in January 2022 that I hadn't met my RMD for 2021 and subsequently distributed the remainder to me in March 2022.  The way I read the rules surrounding the RMD, this is okay as long as I received the full amount prior to April1, 2022.  However, the way TurboTax poses the question it leads one to believe that I should have received it all in 2021.

Is my interpretation correct or should I have received the entire amount in calendar year 2021?