I’m a Pisces and when I do readings for or with my Sagittarius husband, a consistent pairing keeps showing up - I usually come out as the Queen of Wands and he shows up as the Knight of Pentacles.
What’s funny is he’s a pretty grounded Sagittarius (he’s got Virgo rising), while I don’t have any fire placements at all. On paper it doesn’t really fit astrologically, but in readings those cards still feel right.
I like using astrology with tarot, but my intuition usually comes first. I was honestly surprised the first time I drew the Queen of Wands for myself, but it clicked immediately in the context.
Because of that I don’t take astrology super literally. I personally link the King of Swords with Aquarius energy, but I also use that card for people in science, research, publishing, or anyone who works in structured, rule-setting roles.
So maybe Swords energy is just pointing to someone who challenges your thinking or stimulates your mind, not necessarily a specific air sign.