I don’t think you can pre-sort those you would need to sort/filter the results post retrieval they will include the creation date but I guess depending on what you are bringing them into will depend on how easy that is to do.
The other way especially if you only want the latest would be to run an automation in Tape maybe just add the latest posts record Id to a number field then you could get the person record retrieve the number field value and then get that record which might be easier again depending on your system.
Yeah, filtering after won’t work as we just wouldn’t know how many records to get.
An automation might be the way. Every time new relation is created, the user record (number field) can be updated with latest post. I just have to grab that then.