Clarification of the layout
The rightmost strip is likely a higher metal layer than the metal strip you see in blue with diagonal lines. In this case, it is likely metal 2 (M2). By going up M2, they are able to cross over the M1 horizontal strip at the top without forming a connection. Another reason we can assume this is likely metal 2 is that it is a vertical strip. The convention for many PDKs is to use even metal layers for vertical routing and odd layers for horizontal routing.

Image Source: https://my.eng.utah.edu/~cs6710/handouts/floorplanning_3LM.pdf