I did the ancestry DNA test and also uploaded my raw data to GEDmatch. I have located two close family matches and I'm wondering how to find out how close we are. Either half siblings or niece/nephew.
TA (male) & I (female) match at 1897 cM with the longest being 195.6 and 49 segments.
RD (female) and I (female) match at 1821 with the longest being 144.7 and 33 segments (we have X-DNA of 196).
We are all adopted and have NO biological information or ties to the biological families. TA and RD have no shared DNA. From what we have read, TA is from the paternal side and RD is from the maternal based on X-DNA -- is that correct?
How can we find out if this is a half sibling or niece/nephew/aunt match?