…So far as your second question, Thakura Bhaktivinode was not official Spiritual Master of Gaura Kisora dasa Babaji Maharaja. Gaura Kisora dasa Babaji Maharaja was already renounced order, Paramahamsa, but Thakura Bhaktivinode, while He was even playing the part of a householder, was treated by Gaura Kisora dasa Babaji Maharaja as Preceptor, on account of His highly elevated spiritual understanding, and thus He was always treating Him as His Spiritual Master. The Spiritual Master is divided into two parts; namely, siksa guru and diksa guru. So officially Bhaktivinode Thakura was like siksa guru of Gaura Kisora das Babaji Maharaja.
Letter to: Dayananda
Allston, Mass
1 May, 1969
My Dear Dayananda,
Please accept my blessings. Just yesterday morning I was thinking of you that I did not hear from Dayananda for so many days, and immediately I got your nice letter dated April 25, 1969. You are such a nice soul that you are always thinking of Krishna and becoming more and more purified in Krishna Consciousness. As stated in the Srimad-Bhagavatam, First Canto, Second Chapter, Twenty-Seventh Verse, Krishna is sitting in everyone’s heart and He is purifying one who is Krishna Conscious. The symptoms of advancement in Krishna Consciousness is gradually feeling detached to materialistic way of life. Although you are young man, you have got your nice young wife and child, and by Krishna’s Grace, everything is all right so far as your family is concerned, still you are feeling detached. That is very nice. But when your wife and child all are cooperating in your Krishna Consciousness, there is no hampering in your progress. So keep yourself always in Krishna Consciousness with your family members, raise your children to that standard, and employ your energy for serving Krishna. Then, even though you are in family life, you are as good as sannyasi.
The Hare Krishna Movement 