We pray with them and we also ask them to pray for us.
And yet no Apostle prayed to a departed saint in Scripture - not even once.
Sure they did:
[1] And after six days Jesus taketh unto him Peter and James, and John his brother, and bringeth them up into a high mountain apart: [2] And he was transfigured before them. And his face did shine as the sun: and his garments became white as snow. [3] And behold there appeared to them Moses and Elias talking with him. [4] And Peter answering, said to Jesus: Lord, it is good for us to be here: if thou wilt, let us make here three tabernacles, one for thee, and one for Moses, and one for Elias. Matthew 17