In message , at 10:23:36 on Sat, 9 Sep 2017,
Graeme Wall remarked:

I'm still trying to work out 18 different ways to travel between the
two by tube.

Did you include Mornington Crescent? (Reverse at Camden Town.)

But, traditionally, invoking Mornington Crescent ends the journey.

Or in this case ends the game of trying to think of more odd routes.
--
Roland Perry