  The conductance of electrostatic wire junctions in bilayer graphene,
classified as trivial-trivial or trivial-topological regarding the confinement
character on each junction side, is calculated. The topological side always
corresponds to a kink-antikink system, as required for a proper connection with
a trivial side. We report a conductance quench of the trivial-topological
junction, with a conductance {\it near} quantization to $4e^2/h$, which is only
half of the maximum value allowed by the Chern number of a kink-antikink
system. The analysis allowed us to uncover the existence of a chiral edge mode
in the trivial wire under quite general conditions. A double junction,
trivial-topological-trivial, displays periodic Fano-like conductance resonances
(dips or peaks) induced by the created topological loop.
