The inexorable logic of this is that prayers to saints in heaven are ineffective—as we do not know what God allows them to hear or not....
Besides, if you have to go through God, for the saints to hear (since they are not all-knowing) why would you then ask God to ask the saints to ask God about you, when of course, through God the Son, you can ask God directly
?
That statement is false.
Otherwise how do people asking saints for assistance receive cures? You do realize that those requests are always passed on to Jesus Christ and the Father and the Holy Spirit, don’t you?