  An established way of realizing topologically protected states in a
two-dimensional electron gas is by applying a perpendicular magnetic field thus
creating quantum Hall edge channels. In electrostatically gapped bilayer
graphene intriguingly, even in the absence of a magnetic field topologically
protected electronic states can emerge at naturally occurring stacking domain
walls. While individually both types of topologically protected states have
been investigated, their intriguing interplay remains poorly understood. Here,
we focus on the interplay between topological domain wall states and quantum
Hall edge transport within the eight-fold degenerate zeroth Landau level of
high-quality suspended bilayer graphene. We find that the two-terminal
conductance remains approximately constant for low magnetic fields throughout
the distinct quantum Hall states since the conduction channels are traded
between domain wall and device edges. For high magnetic fields, however, we
observe evidence of transport suppression at the domain wall, which can be
attributed to the emergence of spectral minigaps. This indicates that stacking
domain walls do potentially do not correspond to a topological domain wall in
the order parameter.
