We confess Jesus Christ as Lord at Mass and we kneel every Mass. I either kneel or stand at family prayer every day. These are examples of what we do. When do the Protestants of your acquaintance kneel at the confession of Jesus Christ as Lord. Do they kneel at all?
How nice. We do too. My point was to clarify how you interpret the verse that every knee would bow and tongue confess that Jesus Christ is Lord, Philippians 2:9-11 says, "Wherefore God also hath highly exalted him, and given him a name which is above every name: That at the name of Jesus every knee should bow, of things in heaven, and things in earth, and things under the earth; And that every tongue should confess that Jesus Christ is Lord, to the glory of God the Father.
This goes WAY beyond whether someone kneels at "church". It concerns the entire creation "in heaven, in earth and things under the earth" professing and bowing in submission to Jesus Christ as LORD and the day when ALL WILL. God cares more about the position of the heart than the position of the body. I DO hope you understand this.