Not only did He (Sri Caitanya Mahaprabhu) hear the verse (CC Adi 16.41, recited by Kesava Kasmiri), but He immediately made a critical study of it

Expressions researched:
"Not only did He hear the verse, but He immediately made a critical study of it"

Sri Caitanya-caritamrta

CC Adi-lila

Not only did Śrī Caitanya Mahāprabhu pick out this one among the one hundred verses and remember it although the brāhmaṇa had recited them like the blowing wind, but He also analyzed its qualities and faults. Not only did He hear the verse, but He immediately made a critical study of it.

CC Adi 16.45, Translation and Purport

Satisfied by the statement of Lord Caitanya Mahāprabhu, the brāhmaṇa [Keśava Kāśmīrī] explained the quoted verse. Then the Lord said, “Now kindly explain the special qualities and faults in the verse.”

Not only did Śrī Caitanya Mahāprabhu pick out this one among the one hundred verses and remember it although the brāhmaṇa had recited them like the blowing wind, but He also analyzed its qualities and faults. Not only did He hear the verse, but He immediately made a critical study of it.