(I’d fit this in the last post, but the forum is limiting my edits.)
In fact, these little Three Circles brought me into the Catholic Church. It’s a whole initiative in the NAMB and SBC, and possibly beyond… but it points to greater need… and thus greater hope… since it is clear that we as people were still broken and couldn’t get sin totally out of our lives and didn’t know how to see our minds and our lives renewed. We got to repentance, and to the message… but there were things missing. We were never meant to do this alone. The accountability of the Catholic Church answers problems that fully autonomous Christian communities can’t answer… and in that, God brings us together

and heals and saves us not just individually, but together…
And in His Body, He tears down the dividing wall of hostility, and makes us truly One in Him.

And because of this, we can continue to pursue and recover God’s Design for our lives and as the Church, as we grow in Christ-likeness in our lives and in community as His Kingdom comes, His will is done, on Earth as it is in Heaven.
And that’s how you engage with Protestants. You bypass any possible debate and go straight to the Gospel. Any conversations about specific teachings of the Church come after that. We come to them were they are, and help them along the process. We’ll all get there eventually if we are faithful to go to one another and speak the Gospel of Truth and Love with one another.
Look into what FOCUS does… they do a good job, and I think their work has a lot of potential even off of college campuses.