Vani and vapuh are non-different

“We are not separated actually. There are two—vani or vapu. So vapu is physical presence and vani is presence by the vibration, but they are all the same. So Krsna when He was physically present before Arjuna is the same when He is present before us by His vani of Bhagavad-gita.”

Prabhupada’s letter to Hansadutta, Los Angeles, June 22, 1970.