Dragon/Leo and Dragon/Aries meet at 80–85%, the Dragon king with Lion might encounters the boardroom Dragon who bets the bank on luck. Both halves are Dragons, no Chinese-axis tension. The Western halves are Fire trine. Two Dragons, one bonfire.
Chemistry is hot, theatrical, and competitive. Dragon/Leo brings indomitable willpower and Lion might; Dragon/Aries brings Aries passion and leader-of-the-pack swagger. The bedroom is grand and athletic. The risk: two Fire Dragons both want the throne, and the Aries succubus-of-self-regard meets the Lion's might, neither yields without bruising.
Conversation is regal on Dragon/Leo's side and direct on Dragon/Aries's. Both halves declare; both halves expect to be obeyed. The risk: declamation meets declamation, and the room becomes a coronation hall with two thrones.
Friction lives in shared Fire blind spots. Both Dragons want the spectacle and the audience. When neither half yields, the Lion's might meets the Aries ego and the boardroom locks down, Ram on Lion.
Dragon/Leo learns from Dragon/Aries that some declarations are warmth, not aggression; Dragon/Aries learns from Dragon/Leo that the throne is shared or it is empty. Both Dragons practice charm school on purpose.
At 80–85%, this is a strongly compatible, Fire-trine, double-Dragon pairing. Dragon/Leo and Dragon/Aries build empires together, both halves rein in the despotism on purpose.