Dragon/Leo and Dragon/Cancer meet at 70–75%, the Dragon king with Lion might encounters the artist Dragon with Crablike introspection. Both halves are Dragons, no Chinese-axis tension. The Western halves sit in semi-sextile. Throne meets shell.
Chemistry is grand on the Lion's side and tender on the Crab's. Dragon/Leo brings indomitable willpower and Lion might; Dragon/Cancer brings the artist's sensibility and once-and-done devotion. The bedroom is dramatic. The risk: the Lion's roar overwhelms the Crab's whisper, and the Cancerian Dragon retreats into the shell.
Conversation is regal on Dragon/Leo's side and introspective on Dragon/Cancer's. Dragon/Leo declares from the throne; Dragon/Cancer prefers the indirect approach. The risk: the Lion's despotic tone bruises the Crab into silence, and the Lion mistakes silence for assent.
Friction lives in the Leo/Cancer semi-sextile. Dragon/Leo wants subjects; Dragon/Cancer guards the home. When the Dragon king roars for spectacle, the Cancerian Dragon withdraws into tenderness, and the Lion roars into an empty room.
Dragon/Leo learns from Dragon/Cancer that the home is the kingdom that matters most; Dragon/Cancer learns from Dragon/Leo that grand affection is sometimes invitation, not invasion. Both Dragons practice charm school on purpose.
At 70–75%, this is a moderately compatible, double-Dragon pairing. Dragon/Leo and Dragon/Cancer can build something, both halves trade despotism and shell for tenderness on purpose.