I seem to recall that the NLL originally ran all (mostly?) in a single
zone, and that the zonal boundaries were changed so that it wiggled
in-and-out of a pair of zones. Commuters were understandably upset, but
the explanation was that the operator would not get enough revenue
otherwise, so they had the choice between no service, or a service
through wiggly zones.

Or have I got it wrong again?

Regards,

Sid