"There are several possibilities. The simplest would be to simply let one or two wrong facts slip, as if casually, the next time he accosts you. References to neighborhoods, to cafés, that sort of thing--the kind of thing that's unlikely to draw a burdensome suspicion on any particular person, but will keep Javert busy for a while." This is to Enjolras, since he seems to be Javert's favorite target.

"A more complicated possibility would be to leave a piece of paper in the bar, as if by accident, with some false aliases and meaningless codes, something Javert may 'find'...but I suspect that would be less persuasive than words spoken casually. Especially if they're spoken in anger. Which might make Bahorel a better messenger for the false information." This, with a faint grin at Bahorel.

"I've had a different thought, though: perhaps we might use the Labyrinth, somehow? To mislead him, or to delay him. If he goes to a different world through the Labyrinth, then will time pass in Paris, while he's gone, even though it wouldn't while he's in Milliways itself?"