It is said that when Swami Vivekananda toured the US, his friends and co-disciples of Ramakrishna Paramahamsa were very unhappy with his teachings, as he taught only advaita and he never mentioned his Guru, much to the displeasure of those in India.
As we all know Ramakrishna paramahamsa was a great devotee of mother Kai and a great Bhakta. Where as Vivekananda taught the Jnana Marga and not Bhakti Marga.
Once he was asked by a disciple why he never spoke about his Guru, it is said that Swami choked up unable to answer the question as he was on the verge of shedding tears. Once he got back to his normal self he said that just hearing the name “ramakrishna” would make his body shiver and eyes well up.
Though he taught advaita and Jnana Yoga to the west, Young Vivekananda himself was a great Bhakta.
Though Outwardly he was a jnani, within he was a great Bhakta and Paramahamsa though all his life he lived at the feet of Kali and lived like a bhakta, he was a true jnani.
This was a great demonstration by both Guru-disciple about the oneness of all paths. That truth is one, regardless of your method of teaching or being.
Lotus Sutra 