Hehe Marie. Didn't you enjoy my brilliant satire?
That is simply a Google Translate translation.
Pedestrian crosswalks in Europe (and sometimes in America too) are marked by these road stripes.
Since zebras (the animals) are characterized by black and white stripes, in the Italian language, the crosswalks (or passaggi pedonali) are also called "zebra crosswalks", or zebre pedonali.
The online timetable you looked at, probably used Google Translate to translate "passaggio pedonale" or "zebre pedonali" into English.
But basically it means that the two stations are connected by a "walk". They are about one Km apart (not even 3/4 of a mile), so it's no more than 15-20 min walk. There are buses from Como SG to that Como Nord station area (where ferries also dock), so if you don't feel up to the walk, you can take a bus too.