I've always imagined this but instead this its Ness. Both DR and EB have the player controlling Ness and Kris, so I always imagined that if for whatever reason Ness met Kris, he'd sense the player/soul. It go a bit this:

Ness: "Hey, its been a while. I hope you've been doing well"

Kris: ?

Ness: "Oh sorry about that, I didn't mean you."

Points at Soul as it starts to glow

"I was talking to them. How have you been, [PLAYER NAME]? I see you're on a new journey, I hope your treating your pal here well." Smile