Sun in 11th House synastry relationships circumstances are characterized by friendship based on common intellectual or purely scientific interests. Cultural and humanitarian disciplines aside, the interests of the partners lie far beyond the physical and emotional attraction to each other. Mutually beneficial spiritual enrichment allows them to achieve the desired results.
from F. Sakoyan, L. Ecker
Sun in 11th House Synastry Explained
Sun in 11th House synastry partners make you feel friendly; however, the question of leadership in group work situations can arise quite sharply between you. In general, you will be inclined to let the partner be a leader in this synastry (unless the other factors contradict it), but he or she can go too far and try to impose their line on you in everything, ignoring your essential interests. This, of course, will have a bad effect on your friendly feelings, but you may not show your protest for a long time, hoping that the partner will see the incorrectness of such behavior and change it.
Of course, if your Sun is struck and stands in a masculine Sign, your indignation and protest will break out after a while, but still not so quickly, especially if you participate in some group event where the Sun in Eleventh House synastry partner is put over you by the elder: say, you have a kayaking campaign, and he is the commander. Your group lessons will be of great interest to your partner, and it will always be tempting for them to take the initiative and take part in your corresponding activities.
How stable this interest will depend to some extent on the elaboration of your relations and your participation in this group: it may well be that without you the partner’s interest quickly fades away. For example, if your wife’s Sun is in your Eleventh House, she may be happy to be friends and spend time with your friends. But when you break up with them, her interest in them usually disappears immediately.
In general, Sun in 11th House synastry is a favorable aspect, and the partner can subtly teach you a lot, especially in the area of group work relationships: if you are inclined to take these lessons, of course.
from A. Podvodny