Merge revalidated data and previous fetched data during interval revalidation

[wr1159]

Is there a way to merge the revalidated data and previous fetched data in useSWR / useSWRInfinite?

My use case is fetching data from an API with pagination and the data refreshes very quickly. I want to include the most recent data that did not exist in my previous fetch and now add it to my data. eg:

Previous	Revalidated	What I want
4, 5, 6	1, 2, 3	1, 2, 3, 4, 5, 6

I am thinking that if I could somehow have access to both data during revalidation and then I can merge them. Any help would be appreciated! Thank you.