Not especially specific. 1 John refers to the Father being "an advocate" (not "the" advocate), and Christ spoke of the Holy Ghost being Paraclete, that is, advocate.
The notion that no one can advocate or mediate before Christ because Christ is mediator to the Father is illogical. It is also refuted by the very passage where that mediatorship is proclaimed: "I desire therefore, first of all, that supplications, prayers, intercessions, and thanksgivings be made for all men" (1 Timothy 2:1).
Illogical? Shirley, you jest. :) The proclamation is actually a few verses later and the Bible is clear:
1 Tim 2:5 : For there is one God and one mediator between God and men, the man Christ Jesus, ...
What else is there to say? I know you believe in ONE God. This verse leaves zero room for interpretation or inclusion of anyone else as mediator. This verse clarifies your verse. Yours talks about living people praying for one another, which is all well and good. Verse 5 leaves no mistake that there is only one go-between.