Does primary/allied clan settings affect how much experience is gained?

If I wanted to unlock the clans as fast as possible, does it matter if I set them as the primary clan or secondary clan? Do they earn experience at the same rate?

Solution 1:

Yes. After you win or lose a run, your primary clan will gain your run's score as experience, while your secondary clan will gain 50% of your score as experience. So if you gained 40,000 points the primary clan gains 40,000 XP, while your secondary gains 20,000.

I'm not sure if there's an additional cap at the end of each level (like this game's inspiration slay the spire has), I think it's maybe possible to gain more than one level from a single high-scoring run, would have to verify this.