Neither can do anything for anyone today.
I think you are correct.
I’m pretty emphatically of the opinion, that IF heavenbound folks pray . . . it is at Holy Spirit’s prompting and direction and NOT having anything to do with folks on our side directing anything TO them.
NO WAY does God want ANY CHRIST AS THE INTERCESSOR with THE FATHER role diminished in the slightest.
And the whole idea of an interloping Mary role in competition with Christ is offensively idolatrous and blasphemous almost to the max.