Reply to Santhanam Sundar and Paul Symonds' Letter to the Editor re: Syed A. Hussain, Nuria Porta, Emma Hall, et al. Outcomes in Patients with Muscle-invasive Bladder Cancer Treated with Neoadjuvant Chemotherapy Followed by (Chemo)radiotherapy in the BC2001 Trial. Eur Urol 2021;79:307-15.