The two lines match all SNP's from L758 to Y6887 and share the same common male ancestors, migration map and ancient YDNA matches. Red circled SNP's are Trent FT347207>FT345526. Goff are Y6902

BigY Time Tree I-Y6887 https://discover.familytreedna.com/y-dna/I-Y6887/tree

Goff: 1665 GOUGH/GOFF (St. Mary's Co MD / Loudoun Co VA, US)
L758>M170>M253>L840>S63>DF29>Z58>Z59>CTS8647>Z61>Z60>Z140>Z141>Y5497>BY31711>Y6900>Y6908>FT8846>BY11107>Y6889>Y6886>Y6887>Y6902

Trent: L758>M170>M253>L840>S63>DF29>Z58>Z59>CTS8647>Z61>Z60>Z140>Z141>Y5497>BY31711>Y6900>Y6908>FT8846>BY11107>Y6889>Y6886>Y6887>FT347207>FT345526