This one is a bit old but still looks to be doable.
https://learn.microsoft.com/en-us/previous-versions//dd316373(v=technet.10)?redirectedfrom=MSDN
--please don't forget to Accept as answer if the reply is helpful--
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I read the article. (https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/integrate-windows-dns-into-existing-dns-namespace)
Can you use MS clients with another Directory service OR can you remove a MS DNS altogether within an area and fully replace with another DNS server within an area with some clients and applications that are currently using AD or MS DNS?
Answer accepted by question author
This one is a bit old but still looks to be doable.
https://learn.microsoft.com/en-us/previous-versions//dd316373(v=technet.10)?redirectedfrom=MSDN
--please don't forget to Accept as answer if the reply is helpful--