Ianto glances around warily at the suggestion. Not that it isn't a solid theory, but he has read Harry Potter and he can't help but thinking of this ending in the pair of them splinching themselves at this rate.

"I'm not... You're figuring we'll just cancel each other out?" he hazards. "What if it just picks one of us over the other instead? Sends us to fulfill the desires of whoever it thinks might need it more?"