[Narvin briefly ponders the feasibility of planting a bug on a member of security, unbeknownst to them, so he could eavesdrop on the talks. No. The risks outweighed the meagre benefits.]

One or two visitors from another universe is one thing. It's unavoidable upon occasion. [Says Narvin, who himself came from a universe that was not his home universe.]

But if they're planning to establish major contact, my government would want to know. [So the Time Lords on Gallifrey could watch back...and pointedly remain isolationist and refuse mutual contact or to engage in talks unless Romana dragged them kicking and screamed.]