Coordinated order and CC

So

I have my Seraph wrestling with a dog warrior, it had happened that the nearby Fugazi drone also come to help big angel, so they are both engaged with Doggo.

Now the Seraph is part of coordinated order, part of this order is to CC attack the doggo.

Now the question: what's the burst of Seraphs CC ?

Is it 1 or is it 2 (due to getting +1 from ally in engage) ?

 

Thanks!

On a side note: is similar approach done (no bonuses) if a link team smack someone (and there are non-link team people also engaged with target) or G:Sync unit attacking someone who is already engaged (to get more than B2 for themselfs) ?