'The war between the Spartans and... Cov-- Covenant? Thankfully, no. But a Spartan fell through the portal you just came through several months ago so she told me about it.'

It sounds like he's finally starting to believe him. Or at least consider the possibility that York isn't lying.

'We're not. I mean, we're friends, good friends. Actually, the you in this world is my best friend. But we're not together together. ...Wait, Delta too? How is that possible?'