A comparative analysis performed in 1994 by Albert Derolez (University of Ghent) and Nancy Netzer (Boston College) has revealed that manuscript A and manuscript B both date from the same period, that it is highly probable that both were created at the scriptorium of the abbey of Echternach and that they may even have been produced by the same scribe.
Komparatívne analýzy, ktoré v roku 1994 vykonali Albert Derolez (University of Ghent) a Nancy Netzer (Boston College), odhalili, že rukopis A a rukopis B sa datujú do rovnakého obdobia a je vysoko pravdepodobné, že oba boli vytvorené v skriptóriu opátstva Echternach a že ich možno obe vyhotovil ten istý pisár.