Actually you give ME way too much credit
That is precisely what the Bible and God himself says… we are not alike but do hold to the Trinity; Baptism and eternal life togeater. So yes; as practiced Protestantism IS a different and seperate religion than is Catholism… and how can it not be: Given all of the changes is Theology and Philosophy…

a short list of NOT the same as the CC on:
OSAS
Faith Only
The Seven Sacraments
How Sins are forgiven
The Eucharist and REAL Presence
The Complete Bible
Primacy of Peter and Rome
THESE are HUGE issue difference friend and the positions of the CC are well documented and recorded in the Bible. So we ought to pray for unification but it’s far off…
John 10:16 And I have other sheep, that are not of this fold; I must bring them also, and they will heed my voice. So there shall be one flock, one shepherd.
1 Cor. 1: 10” I appeal to you, brethren, by the name of our Lord Jesus Christ, that all of you agree and that there be no dissensions among you, but that you be united in the same mind and the same judgment.”
Eph. 2:19-20 “So then you are no longer strangers and sojourners, but you are fellow citizens with the saints and members of the household of God, [singular] built upon the foundation of the apostles and prophets, Christ Jesus himself being the cornerstone, in whom the whole structure is joined together and grows into a holy temple in the Lord; [singular] in whom you also are built into it for a dwelling place of God in the Spirit. “
Eph. 4: 4 -8“There is one body [Only One Church] and one Spirit, [Only One set of beliefs] just as you were called to the one hope that belongs to your call, one Lord, [Only One God] ONLY one faith, [Only One set of doctrine and dogma] one baptism, By water in the Trinity] one God and Father of us all, who is above all and through all and in all. But grace was given to each of us according to the measure of Christ’s gift. "
God Bless my friend,
Pat