History lesson!
Breakfast was originally (in 4's at least) ash, aldoraz, blanket, black (sometimes) and rollie playing whenever they could with whatever comp they could throw together.
One night, I happened to be in their mumble and they needed someone so I brought my sentinel along with them and we had some super intense games vs mvp (I dont remember if we beat them that night or if it took a few more days b4 we won a few) and traded games with dp. Since then, I've probably played a few thousand games with them but I doubt that much in the way of our synergy has changed. We just know what to do, when we play we call out CD's, burst, CC, positioning, and pertinent info. You could play with anyone as long as they do these things.
What should you take out of this? if you know your role in ranked, you can play with anyone provided they are the same skill level and it will be fine. The reason that solo q stars aren't going to be taking on breakfast or the midian a-team anytime soon is not because of synergy, its because they are simply not at that same level as individual players. Koozie is right.