Hayagrīva: The saṅkīrtana was when He was around 20. The Kazi.
Prabhupāda: The saṅkīrtana was going on.
Hayagrīva: When He was 16, 15.
Prabhupāda: But practically He started this saṅkīrtana movement vigorously from the age of 15 years. But when He was 20 years old, when the movement took very nice appearance, the brāhmaṇas complained. So this movement was about 20 years old when... Then renunciation...