Whatever way you look at it a strong Whitelock current flows through the All Blacks final test of the year in Cardiff.
From Sam's first time captaining this team to Luke's remarkable rise to replace Kieran Read at the back of the scrum to their parents in stands of the Principality Stadium.
If that's not enough, there's also the fact their grandfather, George Nelson-Dalzell, a lock who featured in 22 matches and five tests between 1953-54, played the last time Wales beat the All Blacks, some 64 years ago.
"It's something Luke and I are probably aware of more than anyone else," Sam said as the All Blacks completed their captain's run under the roof ahead of Sunday morning's final outing. "It would be nice not to be like him."
Sam has played 95 tests and will attempt to treat this one like any other.