I have 9cM across 1 segment to "FA", Ancestry says "FA" could be your 3rd cousin 2x removed through my gg grandparents Robert Hudman and Mercy Turner
My husband has 10 cM across 1 segment.
The only common shared surnames in ancestry trees between all 3 of us are Bennett, Smith and Williams AND husband is a Smith!
And there is no indication on Ancestry of a Dna link between myself and my husband.