I assume that the 'Thai Nationality interview' you have referred to is the MOI big committee interview. Any idea when this batch would have completed the NIA interview and had their documents submitted by the SB to MOI?
I had my NIA interview in September 2020 and got a confirmation from my SB case handler that all documents were sent to MOI in October 2020. I am still waiting for the MOI interview call. The SB case handler told me to expect it by end of 2023 or early 2024. Seems abnormally long to me. Although I am in a stable job with a PR and not in a hurry, getting worried in case the documents go missing somewhere. It will be too much of a pain to start all over again.