Direct rollover around Dec/Jan...should I expect to file 1099R with 2023 or 2024 tax return?

Hello, I reached out to my 401K administrator (Alight), but it seemed the agent I spoke with wasn't 100% sure either... so I wanted to see if anyone here has any insight on my situation:

• I rolled over my old 401K to IRAs.
  
• The 401K administrator processed everything on their end on Dec 29, 2023.
• I got the rollover check in Jan, and the check was dated 1/9/2024.
• I deposited the check in Jan 2024.

Question: In this case, am I right in assuming that I should expect to file the 1099R with my 2024 tax return, not 2023, since both the check issue date and deposit date are January 2024? even though the 401K administrator "processed" the request on Dec 29 on their end?

Thank you!