Not when the office of advocate is defined by what He does in the context of that verse for why He is the only One that does it..
1 John 2:1My little children, these things write I unto you, that ye sin not. And if any man sin,
we have an advocate with the Father, Jesus Christ the righteous: 2 And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world. KJV
That is why He is our Advocate as He is the propitiation for our sin. That is why He alone is at that throne of grace & He alone is the only Mediator between God & men.
1 Timothy 2:5 For there is one God, and one mediator between God and men, the man Christ Jesus;
That means Jesus takes our intercessions, the Spirit's unspoken intercessions, & His own intercessions to the father and when the father says yes to any of those intercession, the Son answers the prayer so the father may be glorified in the Son for answers to prayers & receive thanks in Jesus's name.
John 14:6 Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me..... 13 And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son. 14 If ye shall ask any thing in my name, I will do it.
All that the Holy Spirit does in speaking words from Jesus Christ & the fruits of righteousness are from Jesus also, so are the gifts of the Spirit because Jesus is the Head of the Church, the Savior of the body for why the Holy Spirit gives all the credit & glory to Jesus Christ..
John 16:13 Howbeit when he, the Spirit of truth, is come, he will guide you into all truth:
for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come.
14 He shall glorify me: for he shall receive of mine, and shall shew it unto you. 15 All things that the Father hath are mine: therefore said I, that he shall take of mine, and shall shew it unto you.
Let also us consider the Greek word pneuma from which we translate holy Spirit from. Does everything relates to the Holy Spirit regarding that word from Strong's Concordance?
"from pnew - pneo
4154;
a current of air, i.e. breath (blast) or a breeze; by analogy or figuratively, a spirit, i.e. (human) the rational soul, (by implication) vital principle, mental disposition, etc., or (superhuman) an angel, demon, or (divine) God, Christ's spirit, the Holy Spirit:--ghost, life, spirit(-ual, -ually), mind. Compare yuch - psuche
5590."
So how it is used in the verse is how we apply definitions. That means Greek word
parakletos, does not all refer to the Holy Spirit, especially when the Holy Spirit is not the
propitiation for our sins, now is He so how can He serve as an Advocate between us & the Father? So Comforter & Advocate as defined from
parakletos do not exactly refer to the same role, when the Comforter is described as one that teaches & bring into remembrance all things that Jesus has said unto us.
Discernment & wisdom from the Lord Jesus Christ is needed for you to see this, John. Only God can cause the increase.
James 1:5 If any of you lack wisdom, let him ask of God, that giveth to all men liberally, and upbraideth not; and it shall be given him. 6 But let him ask in faith, nothing wavering. For he that wavereth is like a wave of the sea driven with the wind and tossed.
Hebrews 4:12 For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart. 13 Neither is there any creature that is not manifest in his sight: but all things are naked and opened unto the eyes of him with whom we have to do. 14 Seeing then that we have a great high priest, that is passed into the heavens, Jesus the Son of God, let us hold fast our profession. 15 For we have not an high priest which cannot be touched with the feeling of our infirmities; but was in all points tempted like as we are, yet without sin. 16 Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.