Damodar Priya Devi Dasi:
Here is a letter from Srila Prabhupada showing his interest in always preaching co-operatively with his god brothers:
23 May, 1969
Kindly accept my humble obeisances. I beg to enclose herewith a copy of a letter received from my Godbrother, Dr. Syama Sundardas Brahmacari, of your Mission. Taking the concluding portion of his letter inviting me to cooperate with the Gaudiya Mission in the matter of my activities of spreading the objective of Srila Prabhupada Bhaktisiddhanta Sarasvati Goswami Maharaja, I am prepared to cooperate with the Gaudiya Mission in all respects, but I do not know under what condition you wish to cooperate with me. But I am prepared to accept any condition for getting your cooperation in full. So I shall be glad to know from you under what condition our cooperation is possible. But I am prepared in every respect and I shall await your reply with interest.
So far as my starting a separate organization known as International Society for Krishna Consciousness, it was inevitable because none of our godbrothers are cooperating with one another. Every one of us is conducting his own institution, and there is difference of opinion even between Gaudiya Mission and Gaudiya Math.
So if it is now possible to combine ourselves together, I shall be the first man to welcome this good opportunity. But apart from others, if Gaudiya Mission is prepared to cooperate with me, I am prepared to accept this cooperation in any condition. Please therefore let me know your terms of cooperation, and I shall be very glad to consider it. It has been suggested by Dr. Syama Sundardas Brahmacari that we cooperate at least in London, and I shall be glad to know your terms of cooperation.
Thanking you in anticipation for your early reply.
A.C. Bhaktivedanta Swami