It's a long minute of staring at his flatmate as he stumbles again on the return - will the boundary feel solid, or something? Is it just disorientation - because if it's that bad, he won't be driving himself out any time soon. And most of all... does he remember anything?

Finally, Walter talks, and it reassures that he at least remembers enough.

"Oh, you can rate that for yourself," Russell says brightly and helpfully, waggling his phone. It's still recording, even if the visual's going to be terrible from all the moving around. "I missed the start of it, but it should be enough..."

But, teasing aside, there's an important question to ask before he takes his own turn.

"Do you think you remember everything now?"