They each illustrate and answer a part of your question - kneeling, honoring, etc..
How do you communicate with them? How do you wing your requests to them?
I pray.
How do you make them hear you?
I pray louder. :)
Kidding aside, you would need to understand and more fully know the Communion of Saints as in the creeds. Without this, the rest is, at least in part, incomprehensible to you.
In short, we are one, as Jesus prayed in the garden. One in the Body of Christ. In communion - unity. There is no separation, no one outside to yell at in order to make them hear us.
So when you say you pray you are kidding — however one poster here DOES pray to the saints.
Don’t you have some kind of issue with that? Christ taught the disciples (and consequently, us) to pray to The Father... not saints.
Hoss