Le groupe cathédral paléochrétien de Lyon est-il une église double ?

The author re-examines the Church of the Holy Cross which, following the thesis of J. Hubert, was first thought to be part of an Early Christian double church on the site of the cathedral group. Now he identifies the northern room with a heating system on the site of the future Holy Cross Church as a reception hall (perhaps linked to the episcopal church on the model of the cathedral group at Geneva revealed by C. Bonnet). The double cathedral (with a baptistery between the two churches) would either be of Carolingian, possibly Merovingien date. According to the author, the baptistery dates from tire fourth century: one wonders where the main church was before the fifth century and if a second one existed.