2 Demonic Obediences?

[SirUrza]

Is it possible? Should it be allowed?

[Claxon]

In general the game does not allow you to worship more than one god/demonlord/etc.

[Jack Rift]

No, I would think not, but been awhile since I read that feat, but I think I has something about that in it.

[blackbloodtroll]

The feat only can allow you to benefit from one patron.

You can not take a feat more than once, unless the feat specifies otherwise.

So, you may possibly worship many Demon Lords, but you only benefit from one.