Note that the oscillatory signals observed in the BBPP data have the same origin as coherences produced in 2DES experiments. Furthermore, BBPP data is often fundamental to the processing of 2DES data to ensure the phasing procedure is performed correctly. 2DES data collected from the LHC is provided as a video file in the ESI, and exhibit the same oscillations that are observed in the BBPP. Compared to 2DES data, BBPP offers a clear and straightforward method to present coherent oscillations, and thus is used as the focus of this discussion.