Jack raises his eyebrows, unphased. That's one nice thing about teetering on the line between Torchwood agent and Time Agent – the skillset is comprehensive, including something of an inability to be bulled.

Is that a threat? he'd like to ask. But asking is giving the conversation leave to continue, and he doesn't particularly want to do that.

So he'll just step up to meet Ianto's eyes, keeping his locked and impassive. His own emotions are neatly partitioned – as neatly as he can manage, anyway – and shoved away.

He supposes it can't hurt, putting off the impression that there's not much to return to.