Power spectra (upper panel) and time series (lower panel) of a synthetic planetary forcing signal assumed to consist of a single sinusoidal mode with a period of 209.3 years (green lines) and a synthetic solar activity signal which has two additional peaks at 199.3 and 229.3 years. In the time domain, the side bands can be seen to beat against the central peak. This similar to what A2012 interpret as phase-locking. Since it is merely the time-domain counterpart to the frequency-domain signal, it does not provide any evidence for a physical connection of the signals.