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I have a male match on 23andMe that I'm fairly certain is a Paternal match through my Paternal Grandfather. As far as I understand it, I should have a (nearly?) identical Y chromosome to him.

According to 23andMe my Paternal Haplogroup is R-L51 and my match has R-L165.

I was tested on the V4A Chip in 2014 whereas my match was tested on the V5 Chip in 2020.

There is some information here which indicates there are different Y-SNP's on each chip but I'm struggling to figure out how it can help me.

My question is: Is it possible with this information that this match is through my Paternal Grandfather?

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