RangeToolLink with native Bokeh

I am trying to link two plots together with a native bokeh setup. However the RangeToolLink doesn’t seem to do anything. What am I missing?

import pandas as pd
import numpy as np
import holoviews as hv
from bokeh.layouts import row, column
from bokeh.plotting import curdoc, figure
from bokeh.layouts import layout
from holoviews import opts
from holoviews.plotting.links import RangeToolLink

renderer = hv.renderer('bokeh').instance(mode='server')

doc = curdoc()

x = np.linspace(1, 1000, 10000)
y1 = np.sin(x / 10)
y2 = np.sin(x / 10) + 1

df = pd.DataFrame({"x": x, "y1": y1, "y2": y2})

c1 = hv.Curve(df, "x", "y1")
c2 = hv.Curve(df, "x", "y2")

RangeToolLink(c1, c2)

layout = layout(column(renderer.get_plot(c1).state, renderer.get_plot(c2).state))