How many hours of real field fight outdoor preaching and foremost, how many hours, days, weeks, months and years of congregational loud chanting the Hare Krishna maha mantra did our sannyasi spend before he became an authority on the subject of bhakti? Remember, please, there is no other way in Kali yuga, btw. when actually sannyasa taking is forbidden sastrically, for self-realization than " yajnay sankirtana prayair"😮