Do Vassals help each-other break free?

[SFSLovenought]

So, in my current game I have reached a point where I am unstoppable. I have two strong allies, and 5 vassal empires. At this point I am systematically vassalising the entire galaxy, and I will eventually betray my allies and vassalise them. While I am far more powerful than any single nation other than a Fallen Empire, if almost all of my vassals rebelled at the same time, I wouldn't be able to beat them.

So, my question is this: do Disloyal vassals co-ordinate with other disloyal vassals? I can only keep one or two of my Vassals loyal at a time, so I am going to have like 8 disloyal vassals. If they all rebel at once or forge some kind of alliance, i'll be in trouble. But if they each rebel separately, i'll have no trouble.

Also, do Vassals take into account the military power of every disloyal vassal when determining whether to rebel, or do they only compare your power to their own?

 

[Dathon]

In terms of military strength they do take it in account for their relation with the overlord, same concept as in EU4, the more vassals you have, the more their relation suffers due to their total strength. But to say if they actually will rebel at this moment the talk is that they wont rebel, only send insults and nothing more. Most likely the game mechanics for this part is also broken.

 

[beckermt]

People have reported their vassals rebelling, but I do not know if they have all rebelled or not.

Perhaps you should save and then insult them all and delete your fleet?

 

[Dnote]

Never seen a vassal rebel, I've vassalised a nation that was theoretically larger than me, they just sat their disloyal until I got bored and quit.

 

[SFSLovenought]

People have reported their vassals rebelling, but I do not know if they have all rebelled or not.

Perhaps you should save and then insult them all and delete your fleet?

I'm in Ironman unfortunately.