Originally Posted by Drip

At the start of combat, Cymbidiums' skill is announced seperately from other activation rate effects, so I get the 1.2 activation rate anouncement from Geranium, and a seperate 2x activation rate announcement from Cymbidium. How those two combine "under the hood" I really can't say. Could be either 1.2 + 2 = 3.2 or 1.2 * 2 = 2.4. But the result is generally 4 or 5 skill activations on that first turn for me.

If it's pretty much always 4 or 5 activations, then it's likely the 3.2
Assuming average skill activation chance base is 28%:
3.2 * 28 = 89.6%
2.4 * 28 = 67.2%

If it was 2.4, you'd generally have 3 or 4 activations on the first turn:
2/3 rolled 5x and getting 5 activations would be 32/243 = 13.17% chance of it happening, roughly 1/7. For it to be a regular occurrence, you'd have to be absurdly lucky.
2/3 happening 4/5 times is about 32.9% chance of happening, still unlikely for it to be that frequent.