[ They're both confused, because...Ben Solo? That's sure a person who doesn't exist... ]

I...don't have a brother named Ben? I only have the twins - Jacen and Jaina - although I have a cousin named Ben, but he's a baby. And a Skywalker.

[ He supposes it's possible his parents had another kid after he...passed away, but he somehow doubts they'd name the kid Ben. Besides, the timeline already sounds like it doesn't match up, if his hypothetical brother is meant to exist when Uncle Luke was the last Jedi. ]

It's possible we're not from the same place after all...?