LaVerdiere, Eugene. "Conclusion." The Eucharist in the New Testament and the Early Church. Collegeville, Minnesota: The Liturgical Press (Pueblo), 1996, 185-194.
Through LaVerdiere's survey of the eucharist from about AD 30-155, he concludes there is plurality of both thought and practice. In different locations and times there are certainly different emphases. However, he thinks it is possible to track a coherent history (LaVerdiere 1996, 185). The New Testament record was known, and developed from the ritual practices of one source. For this reason, LaVerdiere sees the differences as "complementarity" rather than "diversity" (LaVerdiere 1996, 186). The traditions reflected in the New Testament influenced later and more distant communities.
The celebration of eucharist was universal, never being separated from the local church and always being associated with Jesus' appearance as the crucified and resurrected one (LaVerdiere 1996, 187). He was seen as present for his people. The church didn't exist apart from the eucharist, along with a few other elements.
Through baptism and eucharist, people are seen as entering into and continuing in the unity given by Christ. This is the context for resolving conflicts and doctrinal differences (LaVerdiere 1996, 188).
LaVerdiere further emphasizes the Christology involved in the eucharst. Jesus was specifically recognized as the one present in the meal (LaVerdiere 1996, 189-190). Apart form the Didache, all the witnesses clearly recognized the memory of Jesus' death and resurrection.
We also find complementary elements in the liturgical elements, including formulaic statements, theological concepts, and the overall shape of the ritual (LaVerdiere 1996, 191).