To answer your original question, it's now been long enough since your solar return that you're surely seeing whatever this conjunction means. Probably, you saw it manifest around your birthday, or within a month or two after, because that was when the transiting north node was closest to your natal Chiron.
Wherever the north node is transiting, it makes that part of your chart, and any planet or point it transits, bigger in your life. Chiron, as you probably know, is the wounded healer. It's about where your deepest hurt is, and the process of healing that can take your entire life.
The combination of Leo and the tenth house suggests that your Chiron wound has to do with sense of self, pride, and/or ability to be joyful (Leo), and that you experience it most in the area of your public reputation (tenth house). Insecurity over what people think of you in general, a driving need to be popular, in charge, or just plain highly visible.... those are some ways it might turn up in your life. Has any of that been true for you? I don't mean just recently, but in your life overall.
All the transiting node does is make the issue bigger for a time. At your solar return, the conjunction was in your twelfth SR house, indicating that this issue was deeply hidden and unconscious for you at the time. You may have found yourself acting out and not knowing why. This might have been a passing incident, or it might have blown up into a big deal with major consequences, depending on how you reacted to the feelings stirred up by this transit.