That's a surprise. But there's also a slight chance someone swapped it after getting both. Patch swapping is a fraud that's become pretty common with how valuable they are getting to be. But that doesn't seem likely here.
There was a case of Panini a few years ago putting the Willie Mays jersey relics in Willie Nelson cards by mistake, and putting the red bandanna relics into the Willie Mays cards.
2008 Donruss Americana Celebrity Cuts - [Base] - Century Prime Materials [Memorabilia] #96 - Willie Mays (Uncorrected Error: Willie Nelson Relic) /50 [Uncirculated]
Courtesy of COMC.com
2008 Donruss Americana Celebrity Cuts - [Base] - Century Prime Materials [Memorabilia] #97 - Willie Nelson (Uncorrected Error: Willie Mays Relic) /50
Courtesy of COMC.com