ure can use 'subfigure pixels'.

        .. note::

           Using `ConnectionPatch` across two `~.axes.Axes` instances
           is not directly compatible with :doc:`constrained layout
           </tutorials/intermediate/constrainedlayout_guide>`. Add the artist
           directly to the `.Figure` instead of adding it to a specific Axes,
           or exclude it from the layout using ``con.set_in_layout(False)``.

           .. code-block:: default

              fig, ax = plt.subplots(1, 2, constrained_layout=True)
              con = ConnectionPatch(..., axesA=ax[0], axesB=ax[1])
              fig.add_artist(con)

        Nr[