Second attempt
So we make the following edits to try fix the problem so that the pipes stop sticking out at each other:
Region / cell | Zone | Before | After |
|---|---|---|---|
PIPE | 1 | +A_out -A_in | +A_out -A_in -B_out |
PIPE | 2 | +B_out -B_in | +B_out -B_in -A_out |
PIPE, zone #1¶

PIPE, zone #2¶

Errors¶

The pipes indeed stop ticking out at each other. But we now have a new problem: the two pipes are disconnected, anything flowing through is going to leak!