'He who meditates on the name as Brahman, is, as it were, lord and master as far as the name reaches—he who meditates on the name as Brahman.' 'Sir, is there something better than a name?' 'Yes, there is something better than a name.' 'Sir, tell it me.'
In plain words: Sanatkumara says that whoever meditates on the name as Brahman (the ultimate reality) has power only as far as names reach. Narada asks if there is something greater than a name, and the teacher says yes.