Optimal control theory and related approaches have been pushing up the capabilities of NMR spectroscopy . In this study, the optimal control pulses are at the heart of the BE-pulse, whose design is quite difficult with other means. However, some technical limitations e.g., the computational costs and issues related to the local optima in the optimization protocol, remain. Further developments in these regards are required, that, we believe, will further embolden its opportunity in the advanced protein NMR spectroscopy in the future.