Two questionsregarding BIP85

1) Is a 2/3 multisig using three different BIP39 seeds as safe as using 3 BIP85 child seeds or using 3 BIP85 child seeds from the same parent would reduce safety?

2) Suppose one used the three BIP85 child seeds for the 2/3 multisig and then somebody discovered the parent seed, would security be compromised (I would assume so, but I am not sure wheter testing all the combinations of three child seeds is really feasible…)

Thank you!