Set View with Blend replaces other cameras?

I wonder when Set View Target With Blend node to use a second camera would replace any other cameras? In this case can one say safely that there’s no other camera is rendering the screen?
Basically, I managed to make the ShooterGame into a 3rd person game by adding a custom camera and attack it to the player. I’m worried by doing so I will have two cameras rendering the screen. Please tell me that I’m wrong and it’s only one camera that renders!

Thanks in advance