2. R acknowledged Yamuna (Y) to be his master and Y had adored N (p.54). (Y died before R reached him according to hagiography.)
3. R's disciples considered themselves part of a lineage that included R (p.54) and they adored N.
4. R wrote to convince a non-Śrīvaiṣṇava Brahmin audience and so only cited Sanskrit sources (p. 54). (If I understand Carman and Narayanan correctly, they seem to feel that even though R really revered N, considering the audience he was targeting, R did not cite N.)
5. The influence of N on R is seen in his discussions. For instance on p. 155, Carman and Narayanan