I looked at some pictures of Jill and Joe standing together in previous photos. It appears this particular double of Biden is his taller stand-in. The top of Jill’s head normally lined up with Joes’ ears but with today’s angle, it appears she lines up with his shoulders.
“It appears this particular double of Biden is his taller stand-in.”
I admire their thoroughness in choosing doubles who even poop their pants just like Joe.