Oh, I very much agree that these eucharistic theologies are compatible, or else one of us would not have a valid Eucharist, but that explains why “alter Christus” is not the same as “icon of Christ” acting “in persona ecclesiae”.
Note that the liturgy ad orientem brings the two closer. Another instance where Vatican II innovations, despite the best intentions, drove the Churches further apart.
“Note that the liturgy ad orientem brings the two closer.”
Agreed 100%!