The Sun is the source of all energies. These energies stimulate the activities of the houses occupied by the transiting Sun and reinforce or weaken the planetary effects, depending on the Sun's aspect to the natal planet. When the Sun transits an inner planet, it may trigger a dormant aspect between that inner planet and a slower moving outer planet. If a planet is being transited by another planet when it is being transited by the Sun, the effect of the transit is strengthened.
Sun Inconjunct Saturn
A Sun inconjunct Saturn aspect indicates that someone else is going to set your boundaries and restrict your choice of action. In your romantic relationship, you are likely to find that duties, obligations, and commitments don't enable you to be together when you would like. A relationship issue is setting boundaries beyond your immediate control. When the Sun person is inconjunct the Saturn person, you will have to focus on when you can be together and concentrate on way to overcome your obstacles.