Is Bhakti Fundamentally Sentiment?

'Ecstatic' feelings may be interpreted as quasi mystical visitations.
How does this relate to the importance of Harinam Sankirtana and Srila
Prabhupada's insistence on examinations and scholarship? Is bhakti
primarily 'feeling?' I thought Drutakarma prabhu addressed this
question nicely when in 2000 he wrote : "This clash of images --science
and street religion - is nothing new. For ages, the bhakti tradition in
India has always been a mixture of two seemingly contradictory elements
-- the emotional statement of bhakti through public chanting and
profoundly deep scholarship."