Saturn in 10th House synastry partners have common interests in business and professional activities where their skillful cooperation and the relationship is often characterized by pure friendship. This allows them not only to achieve success in their joint ventures but also to receive high social recognition.
In a positive scenario, Saturn in Tenth House synastry partners help each other in moving up the career ladder. The “Saturnian” personality helps the Tenth House person to be more attentive and prudent while the latter teaches it to be more demanding of themselves and those around them.
In a negative scenario, the partners begin to care more about their mercantile interests than about the success of a common cause, or become competitors with all the ensuing consequences that worsen their relationship.
from F. Sakoyan, L. Ecker
Saturn in 10th House Synastry Explained
Relationship with a Saturn in 10th House synastry partner is unlikely to develop quickly and easily, unless your own Saturn is very strong, and you consider a serious and responsible attitude to life to be the main virtue. But no matter how your Saturn stands, in situations of external choice or decision-making, this partner will certainly condemn you for frivolity, and maybe even the shortcomings of your ethics, or even blame you for shamelessness and lack of the sense of duty.
However, it is possible that the Saturn in Tenth House synastry partner himself will have a heightened sense of responsibility towards you, especially in matters of choosing specific life paths, such as work promotions, and his criticism will be an attempt to transfer to you a subconscious feeling of guilt towards you.
If the partner’s Saturn is not developed, most often his instructions and advice in your situations of choice will be too cruel, dogmatic, down-to-earth, and ultimately oriented towards his own reality and problems. The usual intro goes like this: “I would have done this in your place”, causing your protest since thr partner has no idea what it means to be in your place but nevertheless he takes the liberty to judge and advise.
Working out Saturn in 10th House synastry is difficult for both, but especially for the partner who needs to limit himself in those manifestations that he thinks are necessary and just. You, on the other hand, should learn to draw ethical lessons of behavior in situations of choice: they are moral for you much more often than you were initially inclined to think. As your relationship develops, the partner will be tempted to act as a wise counselor and spiritual mentor for you, and this can be a temptation for you as well, since it may seem to you that you can shift all the responsibility for your life onto the partner. This, however, is an illusion, and before it is realized you can do many things whose consequences will be hard to overcome.
from A. Podvodny