The conference contribution under consideration presents in part updated results of the reviewed journal publication Phys. Rev. D94 (2016) 014017. Furthermore, together with A. Pich, it has already been published as a rather similar proceedings article arXiv:1811.06706 [hep-ph] for the QCD 18 conference in Montpellier. It is reasonably well written and clear. Hence, in my opinion there is no need for a more detailed report.