Dear Andreas, The way I handle this issue is to put everyone in a triangulated group who shares at least a portion of the DNA segment that is the longest segment in the triangulated group. The person in the triangulated group who has the longest segment must not have a known relationship with any of my family members. If this segment is say 30 cMs long there may be people in the triangulated group who don't share a DNA segment with each other, but they could share say 5-10 cMs with the person in the triangulated group who has the longest segment on different portions of that segment. If I ever figure out the genealogical relationship with the person in the triangulated group who has the longest segment, then I can always break the triangulated group down further into two or three triangulated groups. Sincerely, Tim Janzen -----Original Message----- From: GENEALOGY-DNA [mailto:[email protected]] On Behalf Of Andreas West Sent: Sunday, October 1, 2017 10:20 AM To: [email protected] Subject: Re: [DNA] Difficulty understand Ancestry's shared matches Btw, when you say 400 is that with splitting them into the smallest possible groups? Many times we do see TG's where we have smaller TG's at each end which are only connected by some DNA cousins who share the whole segment. That would probably go above 400. Andreas