How to interpret the result
Scan both lists for lines naming the Sun, Moon or Ascendant on opposite sides, such as “A Moon Trine B Sun, orb 2.000°”. In a constructed example, A's Moon at 20 degrees Pisces and B's Sun at 22 degrees Scorpio are 118 degrees apart, a trine at a 2-degree orb, so it shows as a stronger link; A's Sun at 10 degrees Cancer and B's Moon at 14 degrees Cancer form a 4-degree conjunction that raises the count yet appears in neither list. Smaller orbs mean more noticeable themes, not better ones.
Why it matters
Sun-Moon contacts are among the most discussed factors in synastry, joining one person's sense of self with the other's emotional needs. This page suits people who know their signs and want to see whether those placements meet by aspect.
Traditional meaning
Classical marriage astrology, going back to Ptolemy, asked whether the partners' Suns and Moons were in harmonious configuration, and later Western texts kept the Sun-Moon contact as an image of complementarity. A partner's planet touching the Ascendant was seen as immediately noticeable.
Reflection use
Write down the cross-layer contact with the smallest orb and describe, in a sentence each, how you think it shows up for each of you. Then ask the other person, and notice where their experience differs from the textbook.
