Veiled orb drop rate

Guys, is veiled orb drop rate depends on some conditions? Some people says, that you need as much lvl3 members as possible, to maximize chance
Is that true?

I run 6 Catarinas and got 0 orbs. In previous patch i got at least 3 T4 Aisling at this moment. So i am wondering, maybe i am doing something wrong.

It' all random.

My first 12-13 80ivl+ Cata's in league - i got 0x Veiled Orbs.

In last 3x runs im got 3/3 Veiled's and last run was like with many rank 1-2 members.

PS.Updated - 4x runs - 4 x Veiled Orbs.

I've done 10 runs now, 2 orbs have dropped.
It is random.

Ok, so there is no proof that lvl3 members increasing orb drop chance.
Also got 2 orbs from next 3 runs. So 9 runs / 2 orbs now.